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tangent f(x)= 1/x ,\at x=0.501

解答

切线

f (x) = \frac{1}{x}, at x = 0.501

解答

y = - 3.98404 \dots x + 3.99201 \dots

求解步骤

找到切点:

(0.501, \frac{1}{0.501})

计算

f (x) = \frac{1}{x}

的斜率:

\frac{df ( x )}{d x} = - \frac{1}{x ^{2}}

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 = - 3.98404 \dots

找到斜率 m=

- 3.98404 \dots

且穿过

(0.501, \frac{1}{0.501})

的直线:

y = - 3.98404 \dots x + 3.99201 \dots

y = - 3.98404 \dots x + 3.99201 \dots

作图

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