bisection method -

Find a positive root of the following equations by bisection method

1.   x³-4x-0=0

2.   x³+1.2 X² = 4x+4.8

3.   e^x= 3x

4.   3x= (1+sinx)^0.5

5.   x³+3x-1=0

6.   3x = cos x +1

7.   x³ +x² -1=0

8.   2x = 3 +cos x