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Feb
21
comment $\frac {\operatorname d\!y}{\operatorname d\!x}$ for $\sqrt{xy}=1$
You should search logarithmic differentiation, it makes hard problems really simple
Feb
21
answered $\frac {\operatorname d\!y}{\operatorname d\!x}$ for $\sqrt{xy}=1$
Feb
21
revised $\frac {\operatorname d\!y}{\operatorname d\!x}$ for $\sqrt{xy}=1$
added 46 characters in body; edited title
Feb
21
reviewed Approve Convergence of series questions!
Feb
19
revised $\int \frac{x}{\sqrt{x^2+2}} \, \operatorname d\!x$ via substitution
added 17 characters in body; edited title
Feb
19
revised $\int \frac{1}{x\sqrt{x^2-5}} \operatorname d\!x$ by substitution?
edited title
Feb
17
revised For what values of $p>0, \quad \int^{1}_{0} \frac{x}{\sin{(x^{p})}} \operatorname d\!x$ converges?
edited title
Feb
16
revised Limit of $ a_0 = 3 ; a_n = a_{n-1} + \frac{n-1}{n^2}$
added 2 characters in body; edited title
Feb
16
reviewed Approve partial differential equation by Lagrange's method given different solution
Feb
16
reviewed Approve Finding X intercept of a cubic equation?
Feb
15
revised Integral $\int_0^4 \int_\sqrt{y}^2 y^2 {e}^{x^7} \operatorname d\!x \operatorname d\!y\,$
added 33 characters in body; edited title
Feb
15
reviewed Approve What is the Laurent series for the given function?
Feb
14
revised Does $\int^1_0\frac{(1-s)^\alpha}{s^\beta} \operatorname d \!s$ converge?
edited title
Feb
14
revised Proving $\int\limits_{0}^{\infty}\frac{1-\text{e}^{-x}\cos(ax)}{x^{r+1}}\operatorname d\!x = \frac{\Gamma(1-r)}{r}(1-a^2)^{r/2} \cos(r \arctan(a))$
added 27 characters in body; edited title
Feb
13
reviewed Approve Prove that no four positive integers $a, b, c $ and $d$ with $ab = 2d²$ can satisfy the equation $a² + b² = c²$.
Feb
10
revised Calculate the value of $\int_0^\frac{\pi}{6} \frac{\cos x \operatorname d\!x}{\sqrt{\frac{1}{4}-\sin^2x}}$
added 19 characters in body; edited title
Feb
9
revised $2\sin^2\theta - 2\sin\theta = \cos^2 \theta$
edited title
Feb
9
revised units in indefinite integral
added 32 characters in body
Feb
9
reviewed Approve Transcendental number over $\{k\in K\mid f(k)=k\}$
Feb
9
reviewed Approve Buchberger's criterion to show Grobner basis for linear forms