MonotonicityHard

Question

If f(x) = is monotonic increasing, then-

Options

A.b < 8
B.b < 4
C.b > 4
D.b > 8

Solution

f(x) =
monotonic increasing
for Let
f(x) =
it will be monotonic increasing
where 
so 4 - b > 0            4 > b

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