Question

Asked Sep 2, 2019

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Step 1

At x=1 the graph of f(x) touches x axis. This means at x=1, f(x)=0

Or, f(1)=0

From it we get equation: a-b=1

Step 2

At x=1 tangent is x-axis, which is horizontal. So, f'(1)=0, because slop...

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