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77 Answers

newest activity votes
14
I can't do math?
9
Calculate the sum of series $\sum\limits_{i=0}^{n-1} i2^i$
8
How does mathematical coefficients differ from “physical coefficients”?
7
How to simplify polynomials
5
Want to show $\sum_{n=2}^{\infty} \frac{1}{2^{n}*n}$ converges
5
Donald Knuth's summation notation confuses me.
5
Power summation of $n^3$ or higher
5
Complicated rational equation to solve
4
estimation of limit / reducing of limit
4
Find integral from 1 to infinity of $1/(1+x^2)$
4
Partial fractions integration
4
Solving for unknown
4
Math and mental fatigue
4
Would nonmath students be able to understand this?
3
Cyclic sums — How do you use them?
3
Working out digits of Pi.
3
Why is the set of natural numbers considered a non-Abelian group?
3
Simplify $\frac{5+ \sqrt{20}}{6+ \sqrt{20}}$ to $\frac{5+ \sqrt{5}}{8}$
3
Calculate interests
3
Operators - sums, products, exponents, etc.
3
What is the flaw in this reasoning?
3
How was Euler able to create an infinite product for sinc by using its roots?
2
In the expression sqrt(“cat”), what is the formal name of “cat”?
2
The substitution rule and differentials
2
Explain this proof without words of integration by parts to me
2
What are applications of rings & groups?
2
Definite Integral, Sample Points
2
Is there a closed form for the series $\sum_{k=1}^\infty \frac{\ln(4k-3)}{(4k-3)}-\frac{\ln(4k-1)}{(4k-1)}?$
2
How to integrate $(x^{1/2} + 5 x^{1/3})^{-1}$?
2
Why does $\frac{f(x)}{\frac{f(y)}{h}} = \frac{f(x)}{hf(y)}$
1 2 3