The function is defined by

MATHEMATICS · Subjective · A Level · Mathematics · Differentiation · Differentiation

Problem

The function ff is defined by f(x)=xx+2f(x)=\frac{x}{x+2}. What points (x,y)(x,y) on the graph of ff have the property that the line tangent to ff at (x,y)(x,y) has slope 12\frac12?

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