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Apr
25
answered Convergence: infinite series
Apr
25
answered Evaluation of $ \int_{0}^{\frac{\pi}{4}}\left(\cos 2x \right)^{\frac{11}{2}}\cdot \cos xdx $
Apr
25
answered how to prove that a relation is antisymmetric?
Apr
24
answered General term of the sequence $2, 7, 16, 30, 50, 77, 112, 156$
Apr
24
answered How can I prove this inequality? $(a^2+1)(b^2+1)>a(b^2+1)+b(a^2+1)$
Apr
24
answered Eigen value and transpose of the $Matrix$
Apr
24
answered A math contest question related to Ramsey numbers
Apr
24
answered Prove that sets don't intersect
Apr
15
answered Find all ring homomorphisms from $\Bbb Q$ to $\Bbb R$
Apr
14
answered Maximum value of $ x^2 + y^2 $ given $4 x^4 + 9 y^4 = 64$
Apr
14
answered Set Notation help?
Apr
14
answered How can you derive $\sin(x) = \sin(x+2\pi)$ from the Taylor series for $\sin(x)$?
Apr
13
answered describe the ring $R=M_2(\Bbb F)$, where $\Bbb F$ is a field
Apr
13
answered Openness/closedness of the set of all $x \in [0,1]$ having a decimal expansion using only the digits $0,1,9$
Apr
12
answered Matlab code for Jacobian and nonlinear function
Apr
12
answered How should trigonometric expressions be simplified?
Apr
12
answered Why do some say that $f(x)=\frac{1}{x}$ discontinuous?
Apr
11
answered How do I show $P(\mathbb Q) = \mathscr B(\mathbb R) \cap \mathbb Q$
Apr
11
answered Convergence of sequence $x_{n+1}=\sqrt{2x_n+3}$
Apr
10
answered Number in tens place