Q3 of 149 Page 16

If the tangent line at a point (x, y) on the curve y = f(x) is parallel to x-axis, then write the value of

Given curve y = f(x) has a point (x, y) which is parallel to x-axis.


We know that the slope of the x-axis is 0.


∵ the point lies on the given curve


∴ Slope of the tangent


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