First slide
Tangents and normals
Question

If the slope of line through the origin is tangent to the curve y =x3+x+16 is m ,then the value of m is

Moderate
Solution

y =x3+x+16

dydxx1,y1=3x12+1

3x12+1=y1x1=slope of the line passing through 0,0 and x1,y1

3x13+x1=x13+x1+16

2x13=16

x1=2y1=26

 m=13

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