(a) Find the directional derivative of ϕ = x 2 + sin y − x z in the direction i + 2 j − 2 k at the point ( 1 , π / 2 , − 3 ) . (b) Find the equation of the tangent plane and the equations of the normal line to ϕ = 5 at the point ( 1 , π / 2 , − 3 ) .
(a) Find the directional derivative of ϕ = x 2 + sin y − x z in the direction i + 2 j − 2 k at the point ( 1 , π / 2 , − 3 ) . (b) Find the equation of the tangent plane and the equations of the normal line to ϕ = 5 at the point ( 1 , π / 2 , − 3 ) .
Determine the equation of the line tangent to y = (sin x)²(cos x) at the point (5,0).
Use implicit differentiation to find
d²
dx²
2x³-3y² = 8
20
27
Ans./
of the following curve at the point (2, 3).
Find the equation to the tangent line y=8 sin x at point (π/6, 4)
using form mx+b
m=
b=
Both of them m and b equal to in decimal forms.
Plz explain step by step.
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