# A level maths

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#1
How would I do this question?
The curve y=x^3 +10x^2 + kx-2 has a stationary point x=-8
A) find the x coordinate of the other stationary point.
B) determine the nature of both stationary points.
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1 month ago
#2
(Original post by jessgracex)
How would I do this question?
The curve y=x^3 +10x^2 + kx-2 has a stationary point x=-8
A) find the x coordinate of the other stationary point.
B) determine the nature of both stationary points.
Simply differentiate and you know that the resulting quadratic must be zero at x=-8, which gives you k and hence the other stationary point etc
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1 month ago
#3
Read your textbook, ask a classmate, or ask your teacher to explain the general concepts of stationary points to you. You are never going to learn A-Level Maths by approaching questions in this way. This is an extremely basic problem covered in every A-Level textbook.
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