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Tag: prove

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  1. Prove: f(x) = 0 has infinitely many solutions

    Started by lfdahl, March 27th, 2017 11:09
    $[0;1]$, function, infinitely, prove, solutions
    • Replies: 2
    • Views: 79
    Last Post: March 27th, 2017 16:49
    by lfdahl  Go to last post
  2. Triangle inequality

    Started by lfdahl, March 20th, 2017 17:38
    inequality, prod_cycsin, prove, sum_cycsin, triangle
    • Replies: 1
    • Views: 101
    Last Post: March 26th, 2017 15:14
    by lfdahl  Go to last post
  3. first countable spaces

    Started by hksuraj, February 12th, 2017 07:12
    countable, delta, prove, set, set?how
    • Replies: 2
    • Views: 133
    Last Post: March 23rd, 2017 01:50
    by Euge  Go to last post
  4. [SOLVED] Real Analysis - Riemann Integral Proof

    Started by joypav, March 21st, 2017 23:35
    • Replies: 4
    • Views: 112
    Last Post: March 22nd, 2017 23:10
    by joypav  Go to last post

    Forum:
    Analysis

    • Replies: 1
    • Views: 56
    Last Post: March 22nd, 2017 11:56
    by greg1313  Go to last post
  5. How to prove such limits?

    Started by FallArk, March 21st, 2017 15:24
    approaches, book, definition, infty, prove
    • Replies: 4
    • Views: 74
    Last Post: March 21st, 2017 18:28
    by Euge  Go to last post

    Forum:
    Analysis

  6. prove AC^2=AB(AB+BC)

    Started by Albert, March 18th, 2017 03:39
    $triangle, abc, ac^2=abab+bc, angle, prove
    • Replies: 3
    • Views: 97
    Last Post: March 18th, 2017 11:02
    by kaliprasad  Go to last post
  7. Divisibility proved

    Started by lfdahl, March 13th, 2017 08:12
    $343$, 652, divisibility, divisible, prove
    • Replies: 2
    • Views: 129
    Last Post: March 14th, 2017 15:39
    by lfdahl  Go to last post
  8. Prove, that there is no solution

    Started by lfdahl, March 10th, 2017 15:04
    2 Pages
    1 2
    2^left, m^3], natural, prove, solutions
    • Replies: 13
    • Views: 347
    Last Post: March 13th, 2017 14:22
    by lfdahl  Go to last post
  9. Prove an identity with binomial coefficients

    Started by lfdahl, March 2nd, 2017 14:52
    binomial, choose, coefficients, identity, prove
    • Replies: 4
    • Views: 157
    Last Post: March 3rd, 2017 13:10
    by lfdahl  Go to last post
  10. Integer solutions

    Started by lfdahl, March 2nd, 2017 16:02
    $x^3+y^3+z^3, equation, integer, prove, solutions
    • Replies: 2
    • Views: 108
    Last Post: March 3rd, 2017 12:50
    by lfdahl  Go to last post
  11. Prove an inequality

    Started by lfdahl, February 23rd, 2017 15:00
    $sqrt1+sqrt2+sqrt3+, inequality, prove, sqrt2006
    • Replies: 2
    • Views: 124
    Last Post: February 25th, 2017 17:19
    by lfdahl  Go to last post
  12. [SOLVED] How to prove continuity?

    Started by FallArk, February 18th, 2017 16:15
    continuous, find, open, prove, subset
    • Replies: 4
    • Views: 105
    Last Post: February 18th, 2017 18:23
    by Euge  Go to last post

    Forum:
    Analysis

  13. Induction to find the determinant

    Started by mathmari, January 31st, 2017 15:33
    determinant, holds, induction, matrix, prove
    • Replies: 2
    • Views: 119
    Last Post: February 10th, 2017 23:19
    by mathmari  Go to last post
  14. Problem of the Week # 252 - Feb 07, 2017

    Started by Ackbach, February 7th, 2017 15:24
    $g$, $thetan, normal, potw, prove
    • Replies: 0
    • Views: 102
    Last Post: February 7th, 2017 15:24
    by Ackbach  Go to last post
  15. prove no common solution

    Started by Albert, January 21st, 2017 21:04
    assume, b2$, common, prove, solution
    • Replies: 2
    • Views: 131
    Last Post: January 23rd, 2017 07:30
    by kaliprasad  Go to last post
  16. 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: 551
    Last Post: January 15th, 2017 13:44
    by I like Serena  Go to last post

    Forum:
    Trigonometry

  17. property of multiple of 2016

    Started by vidyarth, January 4th, 2017 06:53
    2016, exact, ideas, multiple, prove
    • Replies: 6
    • Views: 272
    Last Post: January 7th, 2017 02:29
    by vidyarth  Go to last post
  18. 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: 222
    Last Post: January 5th, 2017 04:49
    by Opalg  Go to last post
    • Replies: 2
    • Views: 134
    Last Post: January 1st, 2017 02:33
    by Albert  Go to last post
  19. sum of 100 terms (continued)

    Started by Albert, December 29th, 2016 20:33
    equal, numbers, prove, terms, test
    • Replies: 3
    • Views: 183
    Last Post: December 31st, 2016 17:27
    by Saknussemm  Go to last post
  20. 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: 294
    Last Post: December 29th, 2016 09:02
    by anemone  Go to last post
  21. prove all a_ns are integers

    Started by Albert, December 25th, 2016 23:32
    a_n, integer$, prove, term
    • Replies: 2
    • Views: 123
    Last Post: December 26th, 2016 13:42
    by Albert  Go to last post
  22. 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: 274
    Last Post: December 14th, 2016 11:36
    by kaliprasad  Go to last post
  23. Prove that PQR is isosceles?

    Started by woof123, December 7th, 2016 00:11
    • Replies: 4
    • Views: 203
    Last Post: December 10th, 2016 08:29
    by mathlearn  Go to last post

    Forum:
    Geometry

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