Math question problems ! (1 Viewer)

Boonyak · Feb 20, 2012

The curve [maths]y = f(x)[/maths] has gradient function [maths]\frac{dy}{dx}= 3 − 4x.[/maths] The curve passes
through the point (1,−1). Find the equation of the curve.

nightweaver066 · Feb 20, 2012

Boonyak said:
The curve [maths]y = f(x)[/maths] has gradient function [maths]\frac{dy}{dx}= 3 − 4x.[/maths] The curve passes
through the point (1,−1). Find the equation of the curve.

$\frac{dy}{dx}= 34x$

Now we need the primitive function.

$y = 17x^2 +c$

Sub in the given point

$-1 = 17 + c$

$c = -18$

$\therefore y = 17x^2 - 18$

Timske · Feb 20, 2012

I knww i did something wrong

nightweaver066 · Feb 20, 2012

Timske, you found the equation of the tangent at that point of the curve

Math question problems ! (1 Viewer)

Boonyak

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nightweaver066

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Timske

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nightweaver066

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