please solve these three question

1) Find the limit. Use l'Hospital's Rule where appropriate.lim0+(tan8) 2) Use Newton's method to approximate a root of the equation 43+3+4=04x3+3x+4=0 as follows. Let 1=1x1=1 be the initial approximation. The second approximation 2 is , and the third approximation 3 is

3) Let = 3 sqrt x Find the change in y, y when x=1 and =0.4 = please solve