Asked by Lynus

The symbol [x] means the greatest integer not greater than x. If f(x)=[2x]-3x, find the value for f(x-1).

Thanks.
Answered by jim
f(x-1)= [2(x-1)]-3(x-1)
=2x-2-3x+3
=-x+1
Answered by Lynus
So you just take away the brackets? Why are you able to do that?
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