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 Feb 17 accepted Computing $\int_{0}^{1} x \ln(1+\sqrt{1+x^2}) dx$ Oct 21 accepted Solve $x^2 = I_2$ where x is a 2 by 2 matrix Oct 20 accepted How to solve step by step $\frac{2n+1}{n+2} < 8$ Feb 8 accepted How many words can be obtained using 2n letters? Dec 2 accepted Preservation of surjectivity when composing functions Dec 2 accepted Help in understanding integration by changing the variable Nov 4 accepted Complex number modulus inequality Oct 3 accepted How to figure out x and y components of a vector Sep 4 accepted What does it intuitively mean that the divergence of a vector field is 0? Aug 28 accepted Calculus proof for the area of a circle Aug 22 accepted A little help with algebra (homework) Aug 20 accepted Derivative of step functions Aug 19 accepted Is there a non-contradictory non-trivial axiomatic system in which Gödel's theorem is undecidable? Aug 13 accepted Question about continuous functions and indefinite integrals Jan 11 accepted I want to study mathematics ahead of high school, but I found that I'm rusty on the elementary stuff Jan 10 accepted How to solve equations with absolute value and using the Archimedean property