Question

Prove that $\sum_{i=1}^n \frac{1}{\sqrt i} < 2 \sqrt n$ by induction - result doesn't match to wolfram alpha's result

score 97 · Answer 1 · 2026-04-15 23:33:03

Prove that $\sum_{i=1}^n \frac{1}{\sqrt i} < 2 \sqrt n$ by induction - result doesn't match to wolfram alpha's result

Published on 15 Apr 2026 - 23:33

score 1k · Answer 2 · 2026-04-13 14:01:05

How to make Wolfram Alpha give me a range of possible answers for an equation if the subject is assumed to be an integer?

score 106 · Answer 3 · 2026-04-09 04:27:35

106

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score 134 · Answer 4 · 2026-04-13 08:43:58

134

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Simple Differential Equation in Matlab and Wolfram get two different answer?

Published on 13 Apr 2026 - 8:43

score 172 · Answer 5 · 2026-03-25 04:36:38

172

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Solving $1^x+2^x+3^x=0$ equations...

Published on 25 Mar 2026 - 4:36

score 1.1k · Answer 6 · 2026-04-12 04:50:47

1.1k

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score 103 · Answer 7 · 2026-04-16 14:17:53

103

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Published on 16 Apr 2026 - 14:17

score 145 · Answer 8 · 2026-04-16 01:17:00

145

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Are all values of $x$ solutions for $e^{2\ln(\sin(x))} = 1 - e^{2\ln(\cos(x))}$ in $\mathbb R$?

Published on 16 Apr 2026 - 1:17

score 1.3k · Answer 9 · 2026-04-14 20:41:02

1.3k

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Range of function $f(x)=x \sqrt{1-x^2}$

Published on 14 Apr 2026 - 20:41

score 339 · Answer 10 · 2026-04-14 13:36:26

339

Views

Integral in Symbolab and WolframAlpha have different results

Published on 14 Apr 2026 - 13:36

score 156 · Answer 11 · 2026-04-10 18:15:37

156

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Published on 10 Apr 2026 - 18:15

score 111 · Answer 12 · 2026-04-11 17:36:07

111

Views

Inconsistency of limits

Published on 11 Apr 2026 - 17:36

score 513 · Answer 13 · 2026-03-25 09:29:10

513

Views

Why wolfram alpha claimed that this $\sum_{n=1}^{\infty}\sin (\frac{n}{\sqrt{n!}}) $ is converge by test and in the same time is diverge?

Published on 25 Mar 2026 - 9:29

score 58 · Answer 14 · 2026-04-11 16:45:43

58

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How to compute $a\cdot \lim\limits_{n \to \infty}n?$

Published on 11 Apr 2026 - 16:45

score 176 · Answer 15 · 2026-04-14 07:27:44

176

Views

How to find $\frac{146}7 \mod{7}$?

Published on 14 Apr 2026 - 7:27

List Question

Prove that $\sum_{i=1}^n \frac{1}{\sqrt i} < 2 \sqrt n$ by induction - result doesn't match to wolfram alpha's result

How to make Wolfram Alpha give me a range of possible answers for an equation if the subject is assumed to be an integer?

Wrong wolframalpha result, calculating Carmichael number?

Simple Differential Equation in Matlab and Wolfram get two different answer?

Solving $1^x+2^x+3^x=0$ equations...

Calculating Fourier series of $\cos^2(t)$ gives unexpected result

Solving simple quadratic - Wolfram Alpha confusion?

Are all values of $x$ solutions for $e^{2\ln(\sin(x))} = 1 - e^{2\ln(\cos(x))}$ in $\mathbb R$?

Range of function $f(x)=x \sqrt{1-x^2}$

Integral in Symbolab and WolframAlpha have different results

Ability to generate a list of 3-digit numbers from a pool of digits in Wolfram?

Inconsistency of limits

Why wolfram alpha claimed that this $\sum_{n=1}^{\infty}\sin (\frac{n}{\sqrt{n!}}) $ is converge by test and in the same time is diverge?

How to compute $a\cdot \lim\limits_{n \to \infty}n?$

How to find $\frac{146}7 \mod{7}$?

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