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Apr
1
revised Solve the exponential equations
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Apr
1
revised Solve the exponential equations
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Apr
1
revised Solve the exponential equations
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Apr
1
answered Solve the exponential equations
Mar
11
revised Integrate $\int \frac{ e^{\tan^{-1}x}}{(1+x^2)^2} dx$
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Mar
11
revised Integrate $\int \frac{ e^{\tan^{-1}x}}{(1+x^2)^2} dx$
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Mar
11
revised Integrate $\int \frac{ e^{\tan^{-1}x}}{(1+x^2)^2} dx$
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Mar
11
answered Integrate $\int \frac{ e^{\tan^{-1}x}}{(1+x^2)^2} dx$
Mar
9
answered How to integrate $\cos(x+a)\cos(x+a+b)$ where $a$ and $b$ are constants
Mar
8
comment How to think about negative infinity in this limit $\lim_{x \to -\infty} \sqrt{x^2 + 3x} - \sqrt{x^2 + 1}$
Finally, if $x\to\infty$ the asnwers is $3/2,$ but as $x\to-\infty,$ i.e., for all number $x$ is negative, therefore $\frac{3x-1}{2x}\rightarrow-\frac{3}{2}$, for $x\to-\infty$
Mar
8
answered How to think about negative infinity in this limit $\lim_{x \to -\infty} \sqrt{x^2 + 3x} - \sqrt{x^2 + 1}$
Mar
5
awarded  Popular Question
Jan
19
answered To evaluate $\lim_{n \to \infty} \left(1+\frac{1}{2n}\right)^{n+5}$
Jan
6
revised Prove $\sqrt{n}+\sqrt{n+k}$ is irrational
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Jan
6
answered Prove $\sqrt{n}+\sqrt{n+k}$ is irrational
Jan
6
revised Help me solve the limits
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Jan
6
revised Help me solve the limits
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Jan
6
revised Help me solve the limits
added 510 characters in body
Jan
6
revised Help me solve the limits
added 510 characters in body
Jan
6
answered Help me solve the limits