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Maths with Lemon
Tangents and Normals
1. Watch this video
2. Watch this presantation
Now you know :
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How to calculate the derivative of a function and find the gradient at a specific point
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Substitute to the line formula to find the tangent (using the given point)
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Calculate the normal using the formula mn mt =-1
Tangent and Normal
Solved Examples
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Watch the videos (click the sentence)
An Interactive animation of derivative and tangent
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Here you can see also the meaning of the slope that is mentioned in different signs on the road before an uphill.
Tangent and Normal
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You must be able to manipulate algebraic expressions.
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