# Homework Help: Definite integral help,

1. May 5, 2009

### tweety1234

$\int_0^1 \sqrt{x} - x^3 dx$

How do I evaluate this?

what does $\sqrt{x} -x^3 =$ ?

2. May 5, 2009

### Cyosis

It is $$\sqrt{x}+(-x^3) \Rightarrow \int_0^1 \sqrt{x}+(-x^3) dx=\int_0^1 \sqrt{x}+\int_0^1 -x^3 dx$$

3. May 5, 2009

### HallsofIvy

$\sqrt{x}- x^3= x^{1/2}- x^3$. That should be easy to integrate using the "power rule".