MATH 1300 Lecture Notes - Lecture 2: Power Rule, Differentiable Function

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Math 1300 lecture 2 notes power rule and new derivatives from old. In example we found that: which can be written as, this sho(cid:449)s that the po(cid:449)e(cid:396) rule is t(cid:396)ue e(cid:448)e(cid:374) (cid:449)he(cid:374) (cid:374) (cid:1005)(cid:1006). In fact, we will show that it is true for all real numbers n: the power rule (general version), if n is any real number, then, example, differentiate, solution: It also enables us to find normal lines: the normal line to a curve c at a point p is the line through p that is perpendicular to the tangent line at p. New derivatives from old: when new functions are formed from old functions by addition, subtraction, or multiplication by a constant, their derivatives can be calculated in terms of derivatives of the old functions. In particular, the following formula says that the derivative of constant times a function is the constant times the derivative of the function.

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