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(7) If f() = -sec? +tanr, then find f' 2. 2 1 sier Diena
(3) A function is defined as follows 11 - 31+ ar - az +5 if r < -1 if r>-1. Find the value of a such that f(x) is continuous at r = a.
5. Let (sin(x)) if < 70, 71 if r = 0. Then f'(0) is (a) -1, (b), (c) 4, (d) 1, (e) does not exist.. 1 cosir