微积分I（标准路径） · free preview

§1.8 The tangent line approximation

可导函数 $y = f(x)$ 在点 $(a,f(a))$ 处的一般切线近似公式是什么？

1. Introduction

Introduction

The tangent line

Consider the function $y = g(x) = -x^2+3x+2$ .

Use the limit definition of the derivative to compute a formula for $y = g'(x)$ .

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