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Unformatted text preview: of two limits lim J sin J J =1 lim J cos J 1 J = 0 Write down, using the limit def’n, the derivative of y = sinx Write down, using the limit def’n, the derivative of y = cosx Now that we have these two derivatives, we can find the derivatives of the other 4 basic trig. functions using quotient rule. Find the derivative of y = tanx using the quotient rule and the derivatives of sinx and cosx just derived. Find the derivative of y = secx Examples: 1. Differentiate: a. y = 1+ sin x 3 cos x b. y = e u (cos u + cu ) c. y = t 3 cos t Work through h/w #13 and #14 which prove the derivatives of cscx and cotx....
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 Spring '07
 WEARS
 Derivative, Slope, lim, 1 0 j, Exponential Functions Derivatives, 0 0 J, Rule derivative

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