Mathematics for IGCSE & O level - Graphs Of Functions (Section 4 - No. 13)
How is the gradient of a curve estimated at a specific point?
By calculating the average slope over a range.
By drawing a tangent to the curve at that point.
By finding the y-intercept of the curve.
By finding the roots of the curve.
Explanation
The gradient of the curve at a given point can be estimated by drawing a tangent to the curve at that point.
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