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Problem 6. If x - 3 + 1, what is (a) (b) (@) (d) (e) None of these Problem 7. If a = Vt, what is dx ., dt (a) (b) 2vt 1 (c) (d) SINS 2 t (e) None of these Problem 8. If y(x) 2 what is dy ? dx 2 6 (a) (b) 2 6 (c) (d) (e) None of these 1 Problem 9. If x(t) = 45/43, what is a' (1)? (2) 20 (b) -4 5 (c) 12 (d) Undefined (e) None of these Problem 10. If h = t - what is 3t dt2 2 (a) 6t (b) ( c ) 1+ 13 (d) 1- 13 (e) None of these