" 16."e^(-x)cos x

e^(-3x) cos x

int e^(x)cos e^(x)dx

If y,=e^(x)cos x, prove that (dy)/(dx),=sqrt(2)e^(x)cos(x+(pi)/(4))

int e^(x)sin x cos x cos2x cos4x.dx

If y=sin x+e^(x), then (d^(2)x)/(dy^(2))= (a) (-sin x+e^(x))^(-1)(b)(sin x-e^(x))/((cos x+e^(x))^(2))(c)(sin x-e^(x))/((cos x+e^(x))^(3))(d)(sin x+e^(x))/((cos x+e^(x))^(3))

If e^(cos x) -e^(-cos x) = 4 , then the value of cos x, is

If e^(cos x) -e^(-cos x) = 4 , then the value of cos x, is

int_(0)^(pi)(e^(cos x))/(e^(cos x)+e^(-cos x))dx=

Evaluate: int(e^(-x))/(16+9e^(-2x))\ dx