Sunday, February 27, 2011

Test sample

If $f^{'}(x)=\sqrt{x}$ and $f(1)$=2, then $f(x)$ is:

1) $-\frac{2}{3}(x\sqrt{x}+2)$

2) $\frac{3}{2}(x\sqrt{x}+2)$

3) $\frac{2}{3}(x\sqrt{x}+2)$

4) $-\frac{2}{3}x(x\sqrt{x}+2)$