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Mth 121 Calculus, 2022 Computer science

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  • Course
  • Mth 121
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  • Mth 121

At the end of this course, each student should be able to: Define the concepts of functions, range, and domain at the conclusion of this session, Use maps to diagrammatically depict the link between Range and Domain. List the various types of functions. Limits and continuity. Differentiation is...

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Document information

  • September 16, 2023
  • 66
  • 2022/2023
  • Class notes
  • Dr esosa
  • All classes

Subjects

  • limits and continuity
  • differentiation
  • integration
  • calculus
  • mapping and functions
  • limits
  • function of a function
  • product rule
  • implicit differentiation
  • integration by parts

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  • Mth 121
All documents for this subject (10)

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APPLICATIONS OF
DIFFERENTIATION

SOME APPLICATIONS

,
,F’(x) measures the gradient of the tangent to the curve y=f(x) at the point w
abscissa x. The gradient of the tangent at the point with abscissa x1 is then
Thus the equation of the tangent to the curve at the point (x1, y1) on the cu
by (18.6)
𝑦 − 𝑦1 = 𝑓 ′ 𝑥1 𝑥 − 𝑥1
The normal to the curve at the point at the point (x1, y1) on the curve is the
through this point perpendicular to the tangent to the curve. The gradient
normal is thus -1/f’(x1) and the equation of the normal is, by,
−1
𝑦 − 𝑦1 = ′ 𝑥 − 𝑥1
𝑓 𝑥1

, Example 1 Find the equation of the tangent and normal to the curve y=3x2 – 5x at the poin
2)
𝑦 = 𝑓 𝑥 = 3𝑥 2 − 5𝑥
𝑓 ′ 𝑥 = 6𝑥 − 5
𝑓′ 1 = 6 ∙ 1 − 5 = 1
Therefore, the tangent at (1,-2) has the equation
𝑦 − −2 = +1 𝑥 − 1
𝑦+2=𝑥−1
𝑦 =𝑥−3
The normal at (1, -2) has the equation
𝑦 − −2 = −1 𝑥 − 1
𝑦 = −𝑥 − 1

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