find the equations of the tangent and the normal to the curve y=x³+2x²-4x+5 at origin
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y=x³−2x+4
∴dx/dy=3x²−2
∴( dx/dy ) (1.3) =3(1)−2=3−2=1
∴ slope of tangent =1
∴ slope of normal =−1
∴ We get equation of Normal using
u−y 1 =m(x−x 1)
∴y−3=−1(x−1)
∴y−3=−x+1
∴x+y−3−1=0
∴ Required equation of Normal is x+y−4=0
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