1).H(x) = r(x)s(x)

differentiate, using product rule,

H'(x) = r(x)s'(x) + r'(x)s(x)

H'(2) = r(2)s'(2) + r'(2)s(2)

H'(2) =(4)(3) + (-1)(1) = 11

2).

differentiate,

3).

H(x) = r(s(x))

differentiate, using chain rule,

H'(x) = r'(s(x)).s'(x)

H'(2) = r'(s(2)).s'(2)

H'(2) = r'(1).(3)

H'(2) = 3 . r'(1)

we need the value of r'(1) to find H'(2).

4) You try this part. Did you get it ???