Please help me to slove below questions

(Verify that l'Hopital's Rule applies. Then use l'Hopital's Rule to evaluate the given limit)

1)

limx0xsin(x)sin(1+x)+sin(1x)2sin(1)

2)

limx0(x1ln(x+1)1)

3)

limx(3x+2)x1 * 1/x is an exponent

4)

limx0+sin(x)ln(x1)