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Aug
27
answered Computing $\sqrt[3]{1\,}$
Aug
27
reviewed Looks OK $M \neq 0$ but $M^* = 0$.
Aug
27
reviewed Looks OK Solving Differential Equation $\frac{dy}{dx} = 1 -\sin(x+y)/(\sin y \cos x)$ by separating variables
Aug
27
reviewed Edit Characterization of vectors via $\ell_p$ norms
Aug
27
revised Characterization of vectors via $\ell_p$ norms
introduced mathjax in title, fixed mathjax in body
Aug
27
revised Bilinear transformations
deleted 14 characters in body
Aug
27
comment Reduction formulae in definite integration
$\sin^2 x = \frac{1 - \cos{2x}}{2}$
Aug
27
revised Reduction formulae in definite integration
added 4 characters in body
Aug
21
revised Is this the correct formula for this quadratic equation?
deleted 11 characters in body
Aug
21
answered Is this the correct formula for this quadratic equation?
Aug
21
answered How to correctly write definite time integration of this function?
Aug
21
comment How to correctly write definite time integration of this function?
It would be $\int{2\pi r \cdot h \cdot dr}$
Aug
19
revised Calculating the definite integral
added 15 characters in body
Aug
16
revised how to solve this equation using logarithm, if not possible how to solve it?
edited tags
Aug
16
comment Number puzzle : “You can't determine my sum.”
wlg; $2 \le x \lt y \le 25 $. You have $6 \le x\cdot y \le 600 $ and similarly; $5 \le x + y \le 49 $.
Aug
8
answered Function that is discontinuous only for integer fractions
Aug
8
reviewed Approve using half identities to find exact value of each trigonometric expression
Apr
26
comment Find value of k for distinct eigenvalues
The characteristic equation is $-\lambda^3 + 3\lambda + k = 0$.
Apr
21
revised Defining a Limit Point of A Set
added 243 characters in body
Apr
9
comment How expand an equation in powers of two variables?
Let $t=\frac{1}{r}$; you have $dt=-\frac{dr}{r^2}$.