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Question

If f(x)=3x+1, 0x21+9x, 2<x<330+2x, x3 find
f(52)

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Solution

Given,
f(52)=f(2.5)
We have to find f(2.5) so we use function 1+9x because it define from 2<x<3 and 2.5 lie in this interval.
Therefore , put x=2.5 in fn1+9x
f(2.5)=1+9(2.5)
f(2.5)=1+22.5
f(2.5)=23.5

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