problem in calculating range of functions

Asked by  | 14th Jun, 2008, 03:30: PM

Expert Answer:

Consider f(x)=9x- 3x+1=(3x )2-  3x+1

Let  y= 3x ,which is >0

We have f(y)=y2-y+1

The function is clearly lower bound with a value of min(f(y)) = 3/4

Hence range of function is all whole numbers.

Answered by  | 10th Dec, 2008, 09:20: PM

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