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Given the curve y = 4x2 − 6x + 5 and x=1.
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Answer
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| Point | x | y |
|---|---|---|
| y-intercept | 0 | 5 |
| Minimum | 0.75 | 2.75 |
Step-by-step solution
4 stepsFind the y-coordinate of the point on the curve.
Given the curve and .
Substitute into the equation to find the corresponding -value:So, the point on the curve is .
Find the gradient of the tangent to the curve.
Differentiate the curve's equation with respect to to find the gradient function :
Now, evaluate the gradient of the tangent at :
Find the gradient of the normal to the curve.
The normal is perpendicular to the tangent. If is the gradient of the tangent, then the gradient of the normal is given by .
Find the equation of the normal.
Use the point-slope form of a linear equation, , with the point and the gradient :
Multiply both sides by 2 to eliminate the fraction:
Rearrange the equation into the standard form :
The equation of the normal to the curve at is .
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