Thursday, December 24, 2015

What is the derivative of the expression (10+lgx^10+e^10x)^10?

Since the given expression represents a composed function,
we'll evaluate its derivative applying chain rule.


We'll
put 10+lgx^10+e^10x = t


y =
t^10


We'll differentiate y with respect to
t:


dy/dt = d(t^10)/dt


dy/dt =
10t^9


We'll differentiate t with respect to
x:


dt/dx =
d(10+lgx^10+e^10x)/dx


dt/dx = 10/x +
10*e^10x


dy/dx = 10t^9*(10/x +
10*e^10x)


We'll substitute back
t:


dy/dx = 10*[(10+lgx^10+e^10x)^9]*(10/x +
10*e^10x)

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