which means to 3-61) The derivative of an inverse d2 function is equal to derivative of the term x2 + 22 105 308 1. the negative reciprocal of the respect to z, or 2x X + 2. Sir derivative of the direct function the reciprocal of the derivative ratio 4X is unknown, it is nece of the direct function dz 3. the derivative of the direct retain it as a factor. ) (or had function 4. the negative of the derivative of the direct function 3-65 Find d (cos 0), 9346 wov dx 3-62 If x = 3+ y?, then Y equals 1. sin e de (s) (08 1. y2 (2y3 -5y) -1s hiel + 2. -sin e de 2. y2 (203 - 5)-2 de 3. 1 2 3. -cos 8 dx 2y 5 4. cos 8 7 de UD 2y 5y When differentiating trigo functions, it is important 3-63. Which of the following statements remember to find the derivative angle in addition to the derivat is TRUE regarding the expression the function. The following exa ax + xy + yz = 07 0 # bnig .Or-E illustrates this point: 1. x is an explicit function of y of y = cos 40 equals 2. y is independent of x y is an explicit function of x y is an implicit function of x d (cos 40) = -sin 40 d (46) a] au 3-64 The derivative , of the function -sin 40 (4) x" + xy" UD + y = 0 is - -4 sin 40) 1. -2x - y+ + B(0 milk . . 1 + 2x -2x - V 2 . 1 + 2xy 3. 2x + Y. 1 + 2x 4. 2x + v "+ 2xy