Question #5b380

1 Answer
Aug 16, 2015

f(x) = 3 cos x -2 f(x)=3cosx2

Domain: {x in RR}
Range: {f(x) in RR: -5 <= f(x) <= 1}

Explanation:

f(x) = 3 cos x -2

Domain:
x can be any real number.

Range:
-1 <= cos x <= 1
-3 <= 3cos x <= 3
-3-2 <= 3cos x-2 <= 3-2
-5 <= f(x) <= 1