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149,491
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98/100 score
29/20 answers
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1h
revised $y=e^x\sin x$; find all points where slope of tangent line equals 0
edited body
1d
revised trigo substitution and identites?
added 49 characters in body
1d
revised Summation of series with binomial coefficients
added 4 characters in body
1d
revised Evaluate $\sum_{n=1}^{\infty} \frac{n}{n^4+n^2+1}$
added 1 character in body
2d
revised If $\frac{m+1}{m-1}=\frac{cos(\alpha-\beta)}{sin(\alpha+\beta)}$„ then
added 270 characters in body
2d
revised Find number of common terms of two arithmetic progressions
added 12 characters in body
2d
revised Evaluate the inverse trigonometric integral
edited body
2d
revised Remainder when ${45^{17}}^{17}$ is divided by 204
added a tag
Feb
6
revised find $\lim_{n\to\infty}(1+\frac{1}{3})(1+\frac{1}{3^2})(1+\frac{1}{3^4})\cdots(1+\frac{1}{3^{2^n}})$
added 10 characters in body
Feb
5
revised $17x+11y \equiv 7 \pmod {29}$ and $13x+10y \equiv 8 \pmod {29}$. What are x and y?
added 57 characters in body
Feb
4
revised What is the integral value of $\frac{\tan 20^\circ+\tan40^\circ+\tan80^\circ-\tan60^\circ}{\sin40^\circ}$?
added 11 characters in body
Feb
4
revised Domain and range of $f(x)=\arcsin[e^{-x}]+ \arcsin [e^x]$
added 23 characters in body
Feb
4
revised $z^n=(i+z)^n$, solve for $z$
added 165 characters in body
Jan
28
revised Prove that there is prime number and natural so $n\times q$ digits are $1$.
added 18 characters in body
Jan
27
revised prove that the gcd of two given numbers is 1
added 9 characters in body
Jan
25
revised Polar to Cartesian: r = 3 + sin(theta/2)
edited body
Jan
24
revised Power series confusion when multiplying fractions.
added 58 characters in body
Jan
23
revised Quartic with $4 $ equidistant roots
added 127 characters in body
Jan
22
revised Evaluate $\int \frac{2-3x}{2+3x}\sqrt\frac{1+x}{1-x}dx$
deleted 1 character in body
Jan
22
revised Derivative of one function with respect to another
added 83 characters in body