Question

How do I prove that $\lim_{x\to 9} \sqrt{x}=3$ using epsilon-delta proof

score 3.8k · Answer 1 · 2026-04-03 11:59:52

3.8k

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How do I prove that $\lim_{x\to 9} \sqrt{x}=3$ using epsilon-delta proof

Published on 03 Apr 2026 - 11:59

score 673 · Answer 2 · 2015-12-16 16:05:52

673

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Inequality $\log x\le \frac{2}{e} \, \sqrt{x}$

Published on 16 Dec 2015 - 16:05

score 192 · Answer 3 · 2026-04-05 22:08:27

192

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How to solve in radicals this family of equations for any degree $k$?

Published on 05 Apr 2026 - 22:08

score 55k · Answer 4 · 2015-12-20 01:42:30

55k

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Prove that the limit of $\sqrt{n+1}-\sqrt{n}$ is zero

Published on 20 Dec 2015 - 1:42

score 2.2k · Answer 5 · 2015-12-21 04:03:47

2.2k

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Integrate the square root of tangent

Published on 21 Dec 2015 - 4:03

score 654 · Answer 6 · 2015-12-22 21:26:05

654

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Evaluate $\lim \limits_{n\rightarrow\infty}\sin^2(\pi\sqrt{n^2 + n})$

Published on 22 Dec 2015 - 21:26

score 186 · Answer 7 · 2015-12-23 03:48:45

186

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Proving $\sqrt{2a + 2\sqrt{a^2 - b}}=\sqrt{a-\sqrt{b}} + \sqrt{a+\sqrt{b}}$, where $a\geq 0,\ b\geq 0$.

Published on 23 Dec 2015 - 3:48

score 842 · Answer 8 · 2015-12-23 13:44:51

842

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Find $A $ in $\sqrt{28}+\sqrt{7}=\sqrt{A}$

Published on 23 Dec 2015 - 13:44

score 379 · Answer 9 · 2015-12-23 15:12:14

379

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How to prove $2\sqrt{2+\sqrt{3}}=\sqrt{2}+\sqrt{6}$?

Published on 23 Dec 2015 - 15:12

score 102 · Answer 10 · 2026-03-29 18:11:41

102

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Does denesting work with complex roots and other problems with denesting?

Published on 29 Mar 2026 - 18:11

score 610 · Answer 11 · 2026-03-26 22:15:08

610

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Alternative Proof of $\sqrt{2}$ is irrational

Published on 26 Mar 2026 - 22:15

score 4.2k · Answer 12 · 2015-12-25 17:10:09

4.2k

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Subadditivity of square root function

Published on 25 Dec 2015 - 17:10

score 476 · Answer 13 · 2026-03-28 01:15:28

476

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Can $\sqrt{ab}$ and $\sqrt{a^2 + b^2}$ be both integers if $a$ and $b$ are natural numbers?

Published on 28 Mar 2026 - 1:15

score 122 · Answer 14 · 2015-12-28 17:32:36

122

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radical expression

Published on 28 Dec 2015 - 17:32

score 794 · Answer 15 · 2015-12-29 18:52:38

794

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Prove that $\sqrt{x_1}+\sqrt{x_2}+\cdots+\sqrt{x_n} \geq (n-1) \left (\frac{1}{\sqrt{x_1}}+\frac{1}{\sqrt{x_2}}+\cdots+\frac{1}{\sqrt{x_n}} \right )$

Published on 29 Dec 2015 - 18:52

List Question

How do I prove that $\lim_{x\to 9} \sqrt{x}=3$ using epsilon-delta proof

Inequality $\log x\le \frac{2}{e} \, \sqrt{x}$

How to solve in radicals this family of equations for any degree $k$?

Prove that the limit of $\sqrt{n+1}-\sqrt{n}$ is zero

Integrate the square root of tangent

Evaluate $\lim \limits_{n\rightarrow\infty}\sin^2(\pi\sqrt{n^2 + n})$

Proving $\sqrt{2a + 2\sqrt{a^2 - b}}=\sqrt{a-\sqrt{b}} + \sqrt{a+\sqrt{b}}$, where $a\geq 0,\ b\geq 0$.

Find $A $ in $\sqrt{28}+\sqrt{7}=\sqrt{A}$

How to prove $2\sqrt{2+\sqrt{3}}=\sqrt{2}+\sqrt{6}$?

Does denesting work with complex roots and other problems with denesting?

Alternative Proof of $\sqrt{2}$ is irrational

Subadditivity of square root function

Can $\sqrt{ab}$ and $\sqrt{a^2 + b^2}$ be both integers if $a$ and $b$ are natural numbers?

radical expression

Prove that $\sqrt{x_1}+\sqrt{x_2}+\cdots+\sqrt{x_n} \geq (n-1) \left (\frac{1}{\sqrt{x_1}}+\frac{1}{\sqrt{x_2}}+\cdots+\frac{1}{\sqrt{x_n}} \right )$

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