Answers
>
Maths
>
A Level
>
Article
Calculate the gradient of the function y=x^2+6x when y=-9
-9=x^2+6x
0=x^2+6x+9
0=(x+3)(x+3)
when y=-9 x=3
dy/dx=2x+6
dy/dx=2(3)+6=12
HM
Answered by
Hassan M.
•
Maths tutor
5625 Views
See similar Maths A Level tutors
Related Maths A Level answers
All answers ▸
Solve the equation: log5 (4x+3)−log5 (x−1)=2.
Differentiate x^2
A curve has an equation: (2x^2)*y +2x + 4y – cos(pi*y) = 17. Find dy/dx
How do I add up the integers from 1 to 1000 without going insane?
