Question

Choose the function whose graph is given by:



A. y = 4cos(x - 1) + 2
B. y = 4sin(x + 1) - 2
C. y = 4sin(x - 1) - 2
D. y = 6sin(x + 1) - 2

Answer 1

the maxima according to your graph is at y=2 ..now any sin(f(x)) or cos(f(x)) has maximum value 1 and minimum -1 ..according to this,,on matching with the options,,it has to be among options B and C ..
now at x=1.. option C gives y=-2 which does not satisfy the graph..hence the answer should be option B..