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Mathematics
Rodion Iskhakov's user avatar
Rodion Iskhakov's user avatar
Rodion Iskhakov's user avatar
Rodion Iskhakov
  • Member for 2 years, 3 months
  • Last seen more than a week ago
  • Russian Federation
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12
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12
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Top posts
question
3
How to prove that $\sum_{n=1}^\infty \left(e^{\frac 1 n} - e^{\frac 1 {n+2}}\right)$ converges?
Feb 24
question
2
How did people come up with the formula $a^3+b^3=(a+b)(a^2-ab+b^2)$?
Sep 5, 2022
question
2
Please tell me why my method of solving $\sin\left(\frac{\pi}{3}-2\,x\right)-\sin\left(6\,x\right)=2$ is not correct.
Jan 29, 2023
question
2
How to calculate $\int(yy'' + (y')^2)\,dx$?
Apr 11
question
1
Why doesn't my solution give the right answer
Nov 10, 2022
question
1
Determining the domain of a logarithmic equation
Apr 10, 2023
question
0
What's the chance?
Jun 2, 2022
question
-1
Solving $2^{2x^2}-\left(2^3+2^8\right)\cdot 2^{x^2+2x}+2^{11+4x}=0 $ [closed]
Jan 15, 2023