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Oct
7
revised How to find the polynomial which has the sum of two cube roots as one of its roots?
added 2 characters in body
Oct
7
answered Solving congruence equations
Oct
7
comment How to find the polynomial which has the sum of two cube roots as one of its roots?
@ndroock1, That's was I meant
Oct
7
comment How to find the polynomial which has the sum of two cube roots as one of its roots?
@Prometheus, $$A=3+2+3\sqrt[3]6(\sqrt[3]3+\sqrt[3]2)=5+3\sqrt[3]6A$$, right?
Oct
7
answered How to find the polynomial which has the sum of two cube roots as one of its roots?
Oct
7
comment Evaluation of $\int \frac{x\sin( \sqrt{ax^2+bx+c})}{ax^2+bx+c} \ dx\ $
Start writing with $x=\frac{2ax+b-b}{2a}$
Oct
7
revised In $\triangle ABC$, if $\sin^2{A}+\cos^2{C}=\cos^2{B}$,then $C=?$
added 234 characters in body
Oct
7
answered In $\triangle ABC$, if $\sin^2{A}+\cos^2{C}=\cos^2{B}$,then $C=?$
Oct
7
answered How to factor general equation of pair of straight lines with two variables and constant number at last?
Oct
7
answered Find the limit as x approaches negative infinity for $\sqrt{x^2+x-1} +x$
Oct
6
revised Prove the given condition from given two quadratic equation
added 204 characters in body
Oct
6
comment Theory of tangents and normals of an ellipse
@KaranSingh, See also :mathpages.com/home/kmath505/kmath505.htm and maa.org/publications/periodicals/convergence/…
Oct
6
answered Theory of tangents and normals of an ellipse
Oct
6
answered Prove the given condition from given two quadratic equation
Oct
6
comment Integrating by splitting up trig functions
OR $$\cos^3x\sin^5x=\sin x(1-\cos^2x)^2\cos^3x$$
Oct
6
comment Zeros of a function of degree 4
See math.stackexchange.com/questions/480102/…
Oct
6
answered Evaluation of $\int_1^\infty \frac{1}{x(x^2+1)} dx$
Oct
6
comment If $2−\cos^2θ=3\sinθ\cosθ$ then $\sin \theta \neq\cos\theta$ then $\tan \theta$ is…
@jyothika, Please pinpoint the mistake. The case does not arise though as we have $\cos^2\theta,$ not $\cos2\theta$
Oct
6
comment If $2−\cos^2θ=3\sinθ\cosθ$ then $\sin \theta \neq\cos\theta$ then $\tan \theta$ is…
@jyothika, Yes:)
Oct
6
comment If $2−\cos^2θ=3\sinθ\cosθ$ then $\sin \theta \neq\cos\theta$ then $\tan \theta$ is…
@jyothika, Derived from the double angle formula