### Questions (23)

 3 Dirac delta - sifting 2 Calculating convolution integral analytically 2 does simply connectedness require connectedness? 1 How do we decide the direction of vector, that is orthogonal to some other vector? 1 Determining an unknown vector from its cross and dot product with known vector

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 11 When the expression $p^2 - pq + q^2$ is divisible by 3? 2 Difficult Inverse Laplace Transform 2 vector division? 2 Proving $\sin^2\alpha-\cos^2\beta = \sin^2\beta-\cos^2\alpha$ 1 How do I prove that $(ABC)^{-1} = C^{-1} B^{-1} A^{-1}$

### Tags (43)

 12 number-theory × 4 2 vectors × 9 11 divisibility 2 ordinary-differential-equations × 3 4 calculus × 6 2 systems-of-equations × 2 3 integration × 6 2 laplace-transform 3 trigonometry × 3 1 definite-integrals × 3

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