How to find the coefficient of $x^{l}$ in the expansion of $(1+x+x^{2}+...+x^{n})^{m}$ for some given $l$?
52078
Multinomial Coefficients Definition in expansion of $(1+x+x^2+\cdots+x^l)^n$
96875
Finding the value of $x^{x^2}+x^{x^6}$ given that $x^{x^4}=4$
51769
If $x,y,z\in[-1,1]$ and $1+2xyz\geq x^2+y^2+z^2$, then can we infer $1+2(xyz)^n\geq x^{2n}+y^{2n}+z^{2n}$?
116795
Easiest way to extract the coefficient of a polynomial
28297
derivative of x^x^x... to infinity?
13833
What is the coefficient of the term $a^i b^j c^k$ in the expansion of $(a+b+c)^n$?
32122
Find the coefficient of the term $x^2$ in $\left(x+\frac 2x\right)^{4}$
133614
Why is $x^{\log_x n}=n$?
74664
A question regarding power series expansion of an entire function
87304
Solving for $x$ : $a^x+b^x=c$
114506
Expansion of $(1+\sqrt{2})^n$
139121
Evaluating $\int _0 ^1 x^k(\ln x)^m dx$ for integer $k$ and $m$
506
Finding $\int x^xdx$
36424
What is the Taylor series of $\ln \frac{1-x^2}{1+x^2}$?
106934
$x^x=y$. How to solve for $x$?
74955
Simplify result of $\int_0^{\infty} \frac{1}{1+x^n}dx$
155527
Find coefficient for $x^{10}$ in $x^3(x^2-3x^3-1)^6$