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Oct
21
reviewed Approve Implicit Differentiation and Tangent Lines (sin and cos)
Oct
18
reviewed Approve Integral of $\int_0^{2\pi} \frac{e^{-it }dt}{e^{it}-z}$
Oct
17
reviewed Approve How to find the 4th degree polynomial with given values at $0,1,2,3,4$?
Oct
9
reviewed Approve Reducing differential equation $\frac{\operatorname d \!y}{\operatorname d \!x} = \frac{(x+y)^2 }{(x+2)(y-2)}$
Apr
16
reviewed Reject Calculate $\int_0^1 \frac{\ln(1-x+x^2)}{x-x^2}dx$
Apr
12
reviewed Approve Finding the radius of a sphere touching other spheres inscribed in n-dimensional spaces
Apr
11
reviewed Approve If $2$ divides a number $a$, does $2^n$ divide $a$ ? $n$ is any integar
Apr
5
reviewed Approve Maximal multiplicative set and minimal prime ideal
Mar
30
reviewed Reject Evaluate the limit
Mar
22
reviewed Approve one bounded and one 0 is 0
Mar
20
reviewed Reject If $A \cdot x \leq b$, what values should A and B take so that $2<[x1,x2]<20$
Mar
16
reviewed Reject Difficult integral, and I don't know how to even start
Mar
15
reviewed Reject How are the Taylor Series derived?
Mar
13
reviewed Reject Does an equation containing infinity not equal 0 or infinity exist?
Mar
9
reviewed Reject Two non isomorphic algebraic varieties
Mar
9
reviewed Approve Mean Value related problem.
Mar
9
reviewed Approve $x^2-1$ with prime factors < 100
Mar
9
reviewed Approve How to find out the real part of this.
Mar
9
reviewed Approve What is the importance of the spectral theorem?
Mar
8
reviewed Approve Project $x$ orthogonally onto $v$: is the projection $p$ the average of $x$?