45 A BSolutionA y sinx At x pi2 y 1 at x pi y 0 and

4.5

A) y = sinx ======> At x = pi/2 , y = 1; at x = pi , y = 0 and so on

B) y = -3*cosx ======> At x = 0, y = -3; at x = pi/2 , y = 0, at x = pi, y = +3 and so on

C) y = -sinx ======> At x = 7pi/2 , y = 1; at x = 7pi , y = 0; at x = 21pi/2, y = 11 and so on

D) y = 7*sin(pi*x) ========> At x = 0.5 , y = 7; at x =1 , y = 0 ; at x = 1.5, y = -7 and so on