What is the tangent of f(x)=3x*cos(x),\at x=pi ?

The tangent of f(x)=3x*cos(x),\at x=pi is y=-3x

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tangent of f(x)=3x*cos(x),\at x=pi

tangent of

f (x) = 3 x \cdot cos (x), at x = π

y = - 3 x

Solution steps

Find the tangent point:

(π, - 3 π)

Find the slope of

f (x) = 3 x cos (x) : \frac{df ( x )}{d x} = 3 (cos (x) - x sin (x))

EN : T i tl e G e n er a l Eq u a t i o n Sl o p e A t P o in t 2 Eq : m = - 3

Find the line with slope m=

- 3

and passing through

(π, - 3 π) : y = - 3 x

y = - 3 x

\int 3 cos (n x) d x

\int \frac{x - 1}{2} d x

\int x^{4} \cdot ln (x) d x

\int \frac{i}{x} d x

\frac{d}{d x} (ln (x^{2} - 10 x))

What is the tangent of f(x)=3x*cos(x),\at x=pi ?
The tangent of f(x)=3x*cos(x),\at x=pi is y=-3x