O If f ( ) = 7x sinx, find f'( x ). f ' ( x ) = Find f'(x) for fix ) = 7 cos ( x ) + x csc ( x ) f' ( x ) = - 3) Find the two x values at which the tangent line to the curve y= *+ 3 is perpendicular to the line y = x . * +2 Smaller * value : Larger X value : 4 The line y= 5x - 50 is tangent to the graph of y= - 20 X - 6 help ( pants ) 5 Find f' (x) using the QUOTIENT RULE if fun = 4 -X 6 + X 2 f (x) = Find F' (s ) f ( 3 ) = _