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
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 = \(\sqrt{a^2+16b^2}, \alpha=tan^{-1}\frac{4b}{a}\)
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 = \(\sqrt{a^2+16b^2}, \alpha=tan^{-1}\frac{4b}{a}\)