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# Finding stationary points when derivative is in fraction form? watch

1. So i have derived the function 1/((x+5)(x-3)) using the reciprocal rule into 2x+2/((x+5)^2(x-3)^2) and am now very stuck on finding the stationary points from this.. any help would be much appreciated
So i have derived the function 1/((x+5)(x-3)) using the reciprocal rule into 2x+2/((x+5)^2(x-3)^2) and am now very stuck on finding the stationary points from this.. any help would be much appreciated
For a fixed non-zero constant or expression a, for what values of b is ?
Spoiler:
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So it doesn't matter what b is when the numerator is a non-zero constant or expression.. so when for what values of the numerator (a) will you find that dy/dx = 0?
3. (Original post by SeanFM)
For a fixed non-zero constant a, for what values of b is ?
Spoiler:
Show

So it doesn't matter what b is when the numerator is a non-zero constant.. so when for what values of the numerator (a) will you find that dy/dx = 0?
Aaah yes! Thank you every so much fellow!
4. I've moved this into the maths forum as there are a lot more active mathematicians here, so hopefully you'll get better answers.
Aaah yes! Thank you every so much fellow!
No worries so what did you get for your value of x?
6. (Original post by SeanFM)
No worries so what did you get for your value of x?
-1! And that is the only stationary point as far as i am aware, so happy days.
-1! And that is the only stationary point as far as i am aware, so happy days.
Correct well done.

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