1.

LetP (h,K) be anypointon curve y=f(x). Lettangentdrawnat point P meets x-axis at T & normal atpoint P meets x-axis at N(as shown in figure) and m =(dy)/(dx)]_()(h,k)) = shope of tangent. (i)Length of tangent =PT =|K| sqrt(1+(1)/(m^(2))) (ii) Length of Normal =PN +|K| sqrt(1+m^(2)) (iii) Length subtangent = Projection of segment PT on x-axis =TM =|(k)/(m)| (iv) Length of subnormal=Projection of line segment PN on x-axis =MN =|Km| Find theproduct of length of tangentand length of normal for thecurve y=x^(3)+3x^(2)+4x-1 at pointx=0

Answer»

`(17)/(4)`
`(SQRT(15))/(4)`
`17`
`(4)/(sqrt(17 ))`

ANSWER :A


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