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If nth derivative of eax sin⁡(bx+c) cos⁡(bx+c) is, eax rn sin⁡(bx+c+nα⁄2) cos⁡(bx+c+nα⁄2) then,

Posted: Thu Jul 14, 2022 9:26 am
by answerhappygod
a) r = \(\sqrt{a^2+b^2}, \alpha=tan^{-1}\frac{⁡b}{a}\)
b) r = \(\sqrt{a^2+4b^2}, \alpha=tan^{-1}⁡\frac{2b}{a}\)
c) r = \(\sqrt{a^2+8b^2}, \alpha=tan^{-1}⁡\frac{4b}{a}\)
d) r = \(\sqrt{a^2+16b^2}, \alpha=tan^{-1}\frac{⁡4b}{a}\)