Find a and d for the function fx a cosx d such that the gr

Find a and d for the function f(x) = a cos(x) + d such that the graph of f matches the figure.

Solution

Amplitude of the function wose graph is given is (-2+10)/2=4

Vertical shift is by 6 units downwards and the given function is reflection about x axis

The equation of the graph is y=-4cos (x) -6

therefore a=-4 and d=-6