Find the range of function sin(ex).

Find the range of function sin(ex). Correct Answer <span lang="EN-US" style=" line-height: 115%; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">[-1, 1]</span>

CONCEPT:

Exponential functions are functions of the form f(x) = bx for a fixed base b which could be any positive real number.

The inverse of an exponential function is a logarithmic function. For the exponential function y=abx–h + k:

  • The domain is all real numbers.
  • The range is {y | y>k} if a > 0 or {y | y<k} if a < 0.
  • Range of sin (x) is and domain is R.
     

CALCULATIONS:

Given function is f (x) = sin(ex).

On comparing ex with y=abx–h + k, k = 0, a > 0

In this question range of ex will be the domain for sin function.

Range of ex is {y | y>0}, since k=0 and a>0.

So, range of sin(ex) will be

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