Question #d45a8
1 Answer
Jul 29, 2017
Explanation:
#• "note that " dy/dx=m_("tangent")#
#"differentiate "color(blue)"implicitly with repect to x"#
#"differentiate " -2xy" using the "color(blue)"product rule"#
#rArr6ydy/dx-4x=0-2x.dy/dx-2y#
#rArrdy/dx(6y+2x)=4x-2y#
#rArrdy/dx=(4x-2y)/(6y+2x)#
#rArrdy/dx" at " (3,2)#
#=(12-4)/(12+6)=4/9#
