maths question

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#1
Hi I'm trying this question on graphing a derivative function but am really stuck on how we would map out the inflection points.
Last edited by aominedaiki; 1 month ago
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1 month ago
#2
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#3
(Original post by Rufus the red)
Haha yes sorry, I have now edited the message and now have included the file.
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1 month ago
#4
(Original post by aominedaiki)
Haha yes sorry, I have now edited the message and now have included the file.
Just do 3 steps,i.e. piecewise constant. The derivative is undefined at the "knees".
Last edited by mqb2766; 1 month ago
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#5
(Original post by mqb2766)
Just do 3 steps,i.e. piecewise constant. The derivative is undefined at the "knees".
sorry but am just not getting it could u explain the steps please
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1 month ago
#6
(Original post by aominedaiki)
sorry but am just not getting it could u explain the steps please
You could just evaluate the gradient at a few points. You'd notice it's constant in the 3 (obvious?) sections.
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#7
(Original post by mqb2766)
You could just evaluate the gradient at a few points. You'd notice it's constant in the 3 (obvious?) sections.
Ah ok and for the straght line sections the function is undefined
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1 month ago
#8
(Original post by aominedaiki)
Ah ok and for the straght line sections the function is undefined
No. The gradient of the function in the straight line sections is constant. The gradient is undefined at the (2) points where it gives different values when you approach it from above or below.
Last edited by mqb2766; 1 month ago
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