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2d
reviewed Approve How do I find the determinants of $3A, -A, A^2, A^{-1}$, where A is an $4\times 4$ matrix and $\det(A) = \frac{1}{3}$?
2d
reviewed Reject Irrational number multiplied by its fractional part becomes rational (SOLVED)
2d
reviewed Reject How to approximate a normal distribution?
2d
reviewed Approve Can somebody please show me the necessary steps to solve this Calculus problem?
2d
reviewed Approve Can somebody please show me the necessary steps to solve this Calculus problem?
2d
revised What is the complexity of finding roots of quintic polynomial with integer coefficients with integer roots?
claritfied meaning of the solution subspace
2d
revised Understanding the trivial primality test
fixed incorrect use of semicolon
2d
revised (Unsolved) In this infinite sequence, no term is a prime: prove/disprove.
adding latex
2d
reviewed Approve Point in four dimensions
2d
reviewed Approve show that $(1 +\sin{A}) + \cos^2{A} = 2(1 + \sin{A})$?
2d
reviewed Approve Are the signs of total derivatives the same as partial derivatives
2d
reviewed Reject How prove that : $ \sin x+\sin y+\sin z \le \frac{3}{2} $ for triangle $ABC$
2d
reviewed Approve A combinatorics question about selection strategies
2d
reviewed Approve Is there a means of calculating the entropy of a series of bits that takes correlation into account?
2d
reviewed Approve Could you explain the expansion of $(1+\frac{dx}{x})^{-2}$?
2d
reviewed Reject Linear Algebra-Vector Subspaces Question
2d
reviewed Approve Fundamental Theorem of Calculus, application
2d
reviewed Approve Compute the integrals $\int_{C_1}f(z)dz$ and $\int_{C_2}f(z)\,dz$.
2d
reviewed Approve How can I prove this inequality? $(a^2+1)(b^2+1)>a(b^2+1)+b(a^2+1)$
2d
reviewed Approve Proving Finiteness