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Question 4 If f(x) = 7 sina + 4 cost, then f' (2) = f' ( 4 ) = Question 3 Next question You can retry this question below If g(z) = cos(x) then g'(I) = -sin (x) 9'(2 ) = .Question 9 Find the 42th derivative of the function f(x) = cos(z). The answer is function Question 8 Find the equation of the tangent line to the curve y = 5secx - 10 cosa at the point (, 5 ) . The equation of this tangent line can be written in the form y = my + b where m is: and where b is