OCR C1 2010 January — Question 3

Exam BoardOCR
ModuleC1 (Core Mathematics 1)
Year2010
SessionJanuary
TopicDifferentiation Applications
TypeFind normal line equation

3 Find the equation of the normal to the curve \(y = x ^ { 3 } - 4 x ^ { 2 } + 7\) at the point \(( 2 , - 1 )\), giving your answer in the form \(a x + b y + c = 0\), where \(a , b\) and \(c\) are integers.