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Math Problem of the Week
170 topics • Page 3 of 4 • 1, 2, 3, 4
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- Solve the equation [tex]2(x-1)^9(x+1)^8=1[/tex]
by Guest » Thu Jan 07, 2016 3:20 am - 5 Replies
- 1900 Views
- Last post by Guest
Thu Feb 04, 2016 3:38 pm
- Solve the equation [tex]2(x-1)^9(x+1)^8=1[/tex]
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- Difficult system of 3 equations
by Math Tutor » Sat Sep 03, 2011 3:50 am - 5 Replies
- 2398 Views
- Last post by leesajohnson
Sat Jan 30, 2016 6:30 am
- Difficult system of 3 equations
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- The number N is a multiple of 7. The base 2 representation
by Mellie » Fri Jul 24, 2015 11:46 am
- 1 Replies
- 4287 Views
- Last post by Guest
Fri Jul 24, 2015 1:09 pm
- The number N is a multiple of 7. The base 2 representation
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- Which of the residues 0, 1, 2, 3, 4 satisfy the congruenc
by Guest » Fri Jul 24, 2015 11:42 am - 0 Replies
- 1352 Views
- Last post by Guest
Fri Jul 24, 2015 11:42 am
- Which of the residues 0, 1, 2, 3, 4 satisfy the congruenc
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- Find the inverse of 7 modulo 13 (expressed as a residue bet
by Mellie » Wed Jul 22, 2015 12:05 pm - 1 Replies
- 8294 Views
- Last post by Guest
Thu Jul 23, 2015 6:20 pm
- Find the inverse of 7 modulo 13 (expressed as a residue bet
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- For a positive integer n, if both n and n + 2 are prim
by Mellie » Wed Jul 22, 2015 12:59 pm - 1 Replies
- 3577 Views
- Last post by Guest
Thu Jul 23, 2015 5:59 pm
- For a positive integer n, if both n and n + 2 are prim
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- Find a six-digit multiple of 64 that consists only of the d
by Mellie » Wed Jul 22, 2015 12:10 pm - 1 Replies
- 4679 Views
- Last post by Guest
Thu Jul 23, 2015 5:55 pm
- Find a six-digit multiple of 64 that consists only of the d
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- Show that n(2n + 1)(7n + 1) is divisible by 6 for all
by Mellie » Wed Jul 22, 2015 7:41 pm
- 1 Replies
- 4565 Views
- Last post by Guest
Thu Jul 23, 2015 5:47 pm
- Show that n(2n + 1)(7n + 1) is divisible by 6 for all
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- 1(1!) + 2(2!) + 3(3!) + ... + 49(49!) + 50(50!) = ?
by Math Tutor » Thu Jun 04, 2015 8:00 am - 7 Replies
- 3471 Views
- Last post by Guest
Sat Jun 06, 2015 5:02 pm
- 1(1!) + 2(2!) + 3(3!) + ... + 49(49!) + 50(50!) = ?
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- Diophantine equation x^2=y^5+7
by Guest » Fri Feb 14, 2014 10:08 am - 9 Replies
- 3148 Views
- Last post by Guest
Wed Apr 29, 2015 5:46 am
- Diophantine equation x^2=y^5+7
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- Calculus
by Guest » Thu Apr 09, 2015 12:20 pm - 2 Replies
- 2342 Views
- Last post by Guest
Sat Apr 11, 2015 5:12 am
- Calculus
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- The minimum of cos (a) + cos (b) + cos (c)
by Guest » Sat Jan 31, 2015 4:50 pm - 1 Replies
- 4631 Views
- Last post by Guest
Sun Feb 01, 2015 5:55 am
- The minimum of cos (a) + cos (b) + cos (c)
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- Smallest distance between two functions
by Math Tutor » Mon Jan 03, 2011 9:40 am - 3 Replies
- 4385 Views
- Last post by Guest
Wed Dec 10, 2014 12:26 pm
- Smallest distance between two functions
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- Trigonometric expression
by Math Tutor » Tue Jun 24, 2014 9:37 am - 2 Replies
- 2998 Views
- Last post by Math Tutor
Thu Jun 26, 2014 2:49 am
- Trigonometric expression
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- Let O be circumcenter of a triangle ABC
by Math Tutor » Mon Feb 17, 2014 4:44 am - 6 Replies
- 3167 Views
- Last post by Guest
Wed Feb 26, 2014 4:07 am
- Let O be circumcenter of a triangle ABC
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- Calculate the coordinates of C & D
by mwin002 » Mon Jan 27, 2014 9:05 pm
- 5 Replies
- 2231 Views
- Last post by Guest
Tue Jan 28, 2014 5:13 pm
- Calculate the coordinates of C & D
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- Let a,b,c be real positive numbers and abc=1
by Math Tutor » Tue Oct 15, 2013 9:12 am - 5 Replies
- 3524 Views
- Last post by MM
Wed Oct 16, 2013 5:40 pm
- Let a,b,c be real positive numbers and abc=1
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- Prove for every x
by Math Tutor » Mon Sep 09, 2013 6:53 am - 2 Replies
- 1598 Views
- Last post by Math Tutor
Wed Sep 11, 2013 2:58 pm
- Prove for every x
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- Number and quadratic sequences
by Guest » Fri Jul 05, 2013 3:38 am - 1 Replies
- 1886 Views
- Last post by adamsmith
Mon Sep 02, 2013 3:07 am
- Number and quadratic sequences
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- Point inside a quadrilateral ABCD.
by Math Tutor » Tue Jul 16, 2013 8:28 am - 2 Replies
- 2733 Views
- Last post by Math Tutor
Fri Jul 19, 2013 9:43 am
- Point inside a quadrilateral ABCD.
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- Difficult equation
by Math Tutor » Fri Jun 07, 2013 2:57 am - 2 Replies
- 1565 Views
- Last post by Guest
Mon Jun 17, 2013 2:39 am
- Difficult equation
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- Discrete Mathematics
by filip_go » Thu May 02, 2013 9:00 am - 1 Replies
- 2043 Views
- Last post by Guest
Sun May 05, 2013 2:24 pm
- Discrete Mathematics
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- Solve and explain the math problem
by filip_go » Mon Apr 22, 2013 6:39 pm
- 3 Replies
- 1496 Views
- Last post by Guest
Sun Apr 28, 2013 4:26 am
- Solve and explain the math problem
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- Solve the equation in real numbers.
by Math Tutor » Sun Mar 03, 2013 11:23 pm - 1 Replies
- 1781 Views
- Last post by Guest
Mon Mar 04, 2013 9:37 am
- Solve the equation in real numbers.
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- Calculate the sum
by Math Tutor » Thu Feb 21, 2013 2:58 pm - 2 Replies
- 1622 Views
- Last post by Math Tutor
Fri Feb 22, 2013 1:34 pm
- Calculate the sum
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- If the roots of the equation are equal
by Math Tutor » Thu Jan 31, 2013 3:25 am - 1 Replies
- 1634 Views
- Last post by Guest
Thu Jan 31, 2013 9:33 pm
- If the roots of the equation are equal
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- Find the sum of the coefficients
by Math Tutor » Mon Jan 07, 2013 1:53 am - 1 Replies
- 1707 Views
- Last post by Guest
Fri Jan 11, 2013 2:45 pm
- Find the sum of the coefficients
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- Proove that there is a root between 1 and 2
by Guest » Fri Dec 14, 2012 3:45 am - 2 Replies
- 1765 Views
- Last post by Guest
Sat Dec 15, 2012 2:34 am
- Proove that there is a root between 1 and 2
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- Irrational Equation
by Math Tutor » Sun Nov 25, 2012 3:20 pm - 4 Replies
- 2181 Views
- Last post by Math Tutor
Tue Dec 11, 2012 5:20 am
- Irrational Equation
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- Sofia University Entrance Exam
by Math Tutor » Thu Jul 29, 2010 4:22 am - 1 Replies
- 2740 Views
- Last post by Guest
Mon Dec 10, 2012 6:30 pm
- Sofia University Entrance Exam
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- Trigonometric equation: sin(x)sin(4x) = 1
by Math Tutor » Mon Sep 03, 2012 1:19 am - 4 Replies
- 6246 Views
- Last post by MM
Tue Sep 25, 2012 5:32 pm
- Trigonometric equation: sin(x)sin(4x) = 1
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- Prove that the equation has no real solutions
by Math Tutor » Thu Jun 21, 2012 5:19 pm - 4 Replies
- 3425 Views
- Last post by Guest
Tue Aug 14, 2012 5:39 pm
- Prove that the equation has no real solutions
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- Simultaneous Equations x+y=5 x^x+y^x=31
by Math Tutor » Wed May 30, 2012 3:15 am - 4 Replies
- 3443 Views
- Last post by Guest
Fri Jun 15, 2012 3:04 pm
- Simultaneous Equations x+y=5 x^x+y^x=31
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- Solve this little mathematical game
by jupiter_one » Mon Apr 30, 2012 12:00 pm
- 0 Replies
- 2244 Views
- Last post by jupiter_one
Mon Apr 30, 2012 12:00 pm
- Solve this little mathematical game
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- If x, y, z are real numbers, Prove that y(z-x) < 4
by Math Tutor » Mon Dec 12, 2011 3:13 am - 13 Replies
- 2960 Views
- Last post by Guest
Sat Apr 28, 2012 6:04 am
- If x, y, z are real numbers, Prove that y(z-x) < 4
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- Solve the equation (x + a)^4 + (x + b)^4 = c
by Math Tutor » Sun Mar 25, 2012 2:04 pm - 1 Replies
- 1968 Views
- Last post by Guest
Wed Apr 18, 2012 3:01 pm
- Solve the equation (x + a)^4 + (x + b)^4 = c
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- Max of cosa + cosb + cosy+ cosa*cosb*cosy
by Math Tutor » Sun Feb 26, 2012 3:53 am - 8 Replies
- 4274 Views
- Last post by Guest
Fri Mar 09, 2012 4:03 am
- Max of cosa + cosb + cosy+ cosa*cosb*cosy
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- Integer solutions: 3*2^x + 1 = y^2
by Math Tutor » Sun Mar 04, 2012 11:09 am - 2 Replies
- 1896 Views
- Last post by Guest
Wed Mar 07, 2012 4:25 am
- Integer solutions: 3*2^x + 1 = y^2
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- Arithmetic and geometric progression
by Math Tutor » Mon Jan 30, 2012 12:34 pm - 6 Replies
- 2765 Views
- Last post by Guest
Tue Feb 21, 2012 3:11 pm
- Arithmetic and geometric progression
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- Solve the system in natural numbers.
by Math Tutor » Thu Dec 29, 2011 8:42 am - 4 Replies
- 1923 Views
- Last post by Guest
Thu Jan 26, 2012 4:45 am
- Solve the system in natural numbers.
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- Solve the trigonometric equation sin^17 + cos^16 = 1
by Math Tutor » Mon Nov 21, 2011 7:58 am - 8 Replies
- 2691 Views
- Last post by Guest
Fri Dec 30, 2011 8:46 am
- Solve the trigonometric equation sin^17 + cos^16 = 1
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- Prove area equation
by Math Tutor » Mon Dec 05, 2011 6:25 am - 6 Replies
- 2255 Views
- Last post by Guest
Tue Dec 06, 2011 8:00 am
- Prove area equation
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- Prove that 1/2 * 3/4 ***99/100 > 1/15
by Math Tutor » Mon Nov 28, 2011 11:35 am - 2 Replies
- 2759 Views
- Last post by Guest
Mon Nov 28, 2011 4:13 pm
- Prove that 1/2 * 3/4 ***99/100 > 1/15
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- Find the exact value of the logarithmic expession
by Math Tutor » Thu Nov 10, 2011 7:56 am - 7 Replies
- 2176 Views
- Last post by Guest
Fri Nov 25, 2011 6:27 pm
- Find the exact value of the logarithmic expession
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- Prove the inequality
by Math Tutor » Thu Nov 17, 2011 4:19 pm - 14 Replies
- 3145 Views
- Last post by Guest
Sat Nov 19, 2011 2:41 pm
- Prove the inequality
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- Solve the equation x*x*x....=25
by Math Tutor » Tue Nov 15, 2011 3:36 pm - 3 Replies
- 1678 Views
- Last post by Guest
Thu Nov 17, 2011 12:53 pm
- Solve the equation x*x*x....=25
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- Find the values of m for which the equation has 2 roots
by Math Tutor » Wed Nov 02, 2011 1:00 pm - 5 Replies
- 2085 Views
- Last post by Guest
Tue Nov 15, 2011 1:44 pm
- Find the values of m for which the equation has 2 roots
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- System ot 2 equations
by Math Tutor » Tue Sep 13, 2011 4:28 am - 3 Replies
- 1860 Views
- Last post by Guest
Sun Oct 02, 2011 11:57 am
- System ot 2 equations
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- Divisible by 7 numbers between 100 and 6548
by nisarg » Tue Aug 23, 2011 9:45 pm - 1 Replies
- 1574 Views
- Last post by Guest
Fri Aug 26, 2011 6:35 pm
- Divisible by 7 numbers between 100 and 6548
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- Equation: 4^x + 7^x = 11^x
by Math Tutor » Fri Jun 10, 2011 1:09 pm - 2 Replies
- 1549 Views
- Last post by Guest
Mon Aug 08, 2011 10:33 am
- Equation: 4^x + 7^x = 11^x
170 topics • Page 3 of 4
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