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# 133 Posts

 Dec 22 answered Is it 'more rigorous' to perform definite integrations, rather than indefinite integration while solving ODEs? Dec 20 asked What kind of object is the push forward of a vector field? Oct 16 answered Solving an equation of real numbers Aug 22 answered Proof for parallelogram law of vector addition Jul 29 answered $\int_{-\infty}^{\infty}e^{-\pi x^2}\cdot e^{-2\pi ix\xi}dx = e^{\pi\xi^2}$ Nov 13 asked Does the matrix exponential take open sets into open sets? Aug 24 asked Where does the right hand rule appear in the “tensor” definition of the cross product? Jul 24 answered Confusion about Spherical Coordinates Transformation May 10 answered ∇×F (Curl) of a function of 4 variables? Apr 23 answered Let $\int_a^bf(x)sgn(f(x)) + 2f(x) \ dx = 0$. Show that $f$ has at least one root. Apr 20 asked Taylor expansion of a not easily differentiable function Feb 24 answered Solving $\int\sqrt{1+(-2ax+b)^2}\;dx$ Feb 20 answered $\lim_{(x,y) \to(0,0)}\sin(x - y)$ Feb 9 answered How to solve $L = (1.463 \cdot 10^7R^2)/(F^2V) - 1.463R$ for $R$? Feb 5 answered Evaluating $\int \frac{1}{\sqrt{x^2 + a^2}}\, dx$ without resorting to trigonometric $u$-substitution Jan 7 answered Indefinite integral question. Dec 28 asked Doubts with differential geometry notation in Frankel Dec 13 answered Can integration get the real value of $\pi$? Nov 29 answered The arithmetic mean of $X$ when arithmetic mean of $X^2 = 29$. Nov 16 answered Vector by integral, notation convention or mistake?