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Tag: prove

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  1. Prove an inequality

    Started by lfdahl, February 23rd, 2017 15:00
    $sqrt1+sqrt2+sqrt3+, inequality, prove, sqrt2006
    • Replies: 2
    • Views: 80
    Last Post: February 25th, 2017 17:19
    by lfdahl  Go to last post
  2. [SOLVED] How to prove continuity?

    Started by FallArk, February 18th, 2017 16:15
    continuous, find, open, prove, subset
    • Replies: 4
    • Views: 85
    Last Post: February 18th, 2017 18:23
    by Euge  Go to last post

    Forum:
    Analysis

  3. first countable spaces

    Started by hksuraj, February 12th, 2017 07:12
    countable, delta, prove, set, set?how
    • Replies: 1
    • Views: 68
    Last Post: February 12th, 2017 17:28
    by Euge  Go to last post
  4. Induction to find the determinant

    Started by mathmari, January 31st, 2017 15:33
    determinant, holds, induction, matrix, prove
    • Replies: 2
    • Views: 83
    Last Post: February 10th, 2017 23:19
    by mathmari  Go to last post
  5. Problem of the Week # 252 - Feb 07, 2017

    Started by Ackbach, February 7th, 2017 15:24
    $g$, $thetan, normal, potw, prove
    • Replies: 0
    • Views: 87
    Last Post: February 7th, 2017 15:24
    by Ackbach  Go to last post
  6. prove no common solution

    Started by Albert, January 21st, 2017 21:04
    assume, b2$, common, prove, solution
    • Replies: 2
    • Views: 110
    Last Post: January 23rd, 2017 07:30
    by kaliprasad  Go to last post
  7. Prove that sin(x)+cos(x) is equal or larger than 1

    Started by Yankel, January 10th, 2017 05:22
    2 Pages
    1 2
    assume, contradiction, inequality, prove, [sin^2x-2sinxcosx+cos^2x
    • Replies: 11
    • Views: 434
    Last Post: January 15th, 2017 13:44
    by I like Serena  Go to last post

    Forum:
    Trigonometry

  8. property of multiple of 2016

    Started by vidyarth, January 4th, 2017 06:53
    2016, exact, ideas, multiple, prove
    • Replies: 6
    • Views: 213
    Last Post: January 7th, 2017 02:29
    by vidyarth  Go to last post
  9. Prove (x+y+z)+(a+b+c)≥1

    Started by anemone, January 3rd, 2017 11:12
    $a+b+c^2+x+y+z^2ge, numbers, prove, x+y+z+a+b+c≥1, z0$
    • Replies: 4
    • Views: 190
    Last Post: January 5th, 2017 04:49
    by Opalg  Go to last post
    • Replies: 2
    • Views: 113
    Last Post: January 1st, 2017 02:33
    by Albert  Go to last post
  10. sum of 100 terms (continued)

    Started by Albert, December 29th, 2016 20:33
    equal, numbers, prove, terms, test
    • Replies: 3
    • Views: 152
    Last Post: December 31st, 2016 17:27
    by Saknussemm  Go to last post
  11. Sum of a hundred terms

    Started by anemone, December 21st, 2016 12:45
    $a_1, a_100$, a_2, cdots, equal, hundred, numbers, prove
    • Replies: 6
    • Views: 265
    Last Post: December 29th, 2016 09:02
    by anemone  Go to last post
  12. prove all a_ns are integers

    Started by Albert, December 25th, 2016 23:32
    a_n, integer$, prove, term
    • Replies: 2
    • Views: 106
    Last Post: December 26th, 2016 13:42
    by Albert  Go to last post
  13. Prove 1 ≤ x+y+z ≤ 2

    Started by anemone, December 11th, 2016 00:12
    $1le, $xy+yz+zx=1$, 1]$, prove, x^2+y^2+z^2le
    • Replies: 6
    • Views: 234
    Last Post: December 14th, 2016 11:36
    by kaliprasad  Go to last post
  14. Prove that PQR is isosceles?

    Started by woof123, December 7th, 2016 00:11
    • Replies: 4
    • Views: 170
    Last Post: December 10th, 2016 08:29
    by mathlearn  Go to last post

    Forum:
    Geometry

  15. Proving determinant

    Started by MaryAnn, November 23rd, 2016 23:06
    $deta, 4k$, entries, hand, prove
    • Replies: 4
    • Views: 193
    Last Post: November 26th, 2016 11:08
    by MaryAnn  Go to last post
  16. Nine-Point Circle

    Started by pholee95, November 14th, 2016 20:18
    • Replies: 1
    • Views: 160
    Last Post: November 15th, 2016 21:14
    by greg1313  Go to last post

    Forum:
    Geometry

  17. Problem of the week #240 Nov 5th, 2016

    Started by anemone, November 5th, 2016 03:30
    $xyzle, $x^2+y^2+z^2+xyz=4$, potw, prove, read
    • Replies: 1
    • Views: 185
    Last Post: November 12th, 2016 12:16
    by anemone  Go to last post
  18. Problem of the week #238 Oct 20th, 2016

    Started by anemone, October 20th, 2016 12:48
    potw, prove, read, remember, submission
    • Replies: 1
    • Views: 226
    Last Post: October 29th, 2016 00:38
    by anemone  Go to last post
  19. Proving Scalar Product

    Started by Tarrant, October 27th, 2016 18:08
    $langle, product, prove, scalar, xrangle
    • Replies: 1
    • Views: 121
    Last Post: October 27th, 2016 23:07
    by GJA  Go to last post
    • Replies: 3
    • Views: 235
    Last Post: October 26th, 2016 23:41
    by kaliprasad  Go to last post
  20. using trigonometry to prove <c=50 degree

    Started by Albert, October 22nd, 2016 09:50
    prove, trigonometry
    • Replies: 1
    • Views: 109
    Last Post: October 23rd, 2016 00:04
    by kaliprasad  Go to last post
  21. Prove, that a is an integer

    Started by lfdahl, October 16th, 2016 14:04
    2 Pages
    1 2
    find, mathbbz], mod, prove, [ain
    • Replies: 10
    • Views: 417
    Last Post: October 21st, 2016 14:45
    by lfdahl  Go to last post
  22. Piecewise limits

    Started by Harambe, October 17th, 2016 17:46
    contradiction, exist, limit, mathbbq, prove
    • Replies: 2
    • Views: 209
    Last Post: October 18th, 2016 03:48
    by Opalg  Go to last post

    Forum:
    Calculus

  23. prove inequality

    Started by Albert, October 7th, 2016 09:49
    $1+a1+b1+cgeq, 1+a+b+c$, cgeq1$, inequality, prove
    • Replies: 1
    • Views: 128
    Last Post: October 7th, 2016 12:07
    by Euge  Go to last post
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