Tangents and Normals
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TANGENTS AND NORMALS Chapter 9D
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Tangents and Normals. Chapter 9D. Tangents and normals. As mentioned earlier in this chapter, the derivative f '( x ) is actually the gradient function. - PowerPoint PPT Presentation
Transcript of Tangents and Normals
TANGENTS AND NORMALS
Chapter 9D
TANGENTS AND NORMALS
As mentioned earlier in this chapter, the derivative f'(x) is actually the gradient function.
This means that the value of the gradient at any particular point on a curve is equal to the numerical value of the derivative at that point.
recall that the equation of a straight line is given by y − y1 = m(x − x1) where (x1, y1) is the point P, above, and m is the gradient.
EXAMPLE 1
EXAMPLE 2