lab bhattacharjee
Reputation
989/1000 score
 11h comment Differentiating the function $\arcsin(3x-4x^3)$ If $x>1/2, \arcsin(3x-4x^3)=-(3\arcsin x-\pi)$ and for $x<-1/2, \arcsin(3x-4x^3)=-\pi-3\arcsin x$ 11h answered Differentiating the function $\arcsin(3x-4x^3)$ 13h comment Expand $(x_1+x_2+\dots+x_m)^n$? mathworld.wolfram.com/MultinomialTheorem.html 13h answered Function represented by power series 1d comment $\cot^{-1}(x)=\pi+\tan^{-1}(1/x)$ when $x<0$ 1d answered Simple trigonometrical equations 1d comment Is $a \sin x + b \sin y \leq \sin(ax + by)$ true? 1d comment Simplify $\csc(65^{\circ} + \theta) - \sec(25^{\circ} - \theta) - \tan(55^{\circ} - \theta) + \cot(35^{\circ} + \theta)$. @Abhishekstudent, See proofwiki.org/wiki/… 1d answered How to show this integral (Error function) 1d comment Simplify $\csc(65^{\circ} + \theta) - \sec(25^{\circ} - \theta) - \tan(55^{\circ} - \theta) + \cot(35^{\circ} + \theta)$. @Abhishekstudentm $$65^\circ+\theta+(25^\circ-\theta)=90^\circ\iff65^\circ+\theta=90^\circ-(25 ^\circ-\theta)$$ 1d answered Simplify $\csc(65^{\circ} + \theta) - \sec(25^{\circ} - \theta) - \tan(55^{\circ} - \theta) + \cot(35^{\circ} + \theta)$. 2d answered Functions - Trig - Determine 2d comment limit evaluation calculus I 2d comment Proving a complicated identity @Unknown,In case you don't know Double Angle Formula, see the alternative method 2d comment Proving a complicated identity @ClaudeLeibovici, Thanks. I'm an Introvert:) 2d revised Proving a complicated identity added 152 characters in body 2d answered Proving a complicated identity 2d answered Which points lie on the prependicular bisector of (-1,-6) and (5,-8) 2d answered Q: Why is this the limit? 2d answered Combined arithmetic and geometric progression problem