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tangent 3x^4-7x^2,\at x=-1

解答

切线

3 x^{4} - 7 x^{2}, at x = - 1

解答

y = 2 x - 2

求解步骤

找到切点:

(- 1, - 4)

计算

y = 3 x^{4} - 7 x^{2}

的斜率:

\frac{d y}{d x} = 12 x^{3} - 14 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 = 2

找到斜率 m=

2

且穿过

(- 1, - 4)

的直线:

y = 2 x - 2

y = 2 x - 2

作图

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