How good is your Mathematics?

[Brown, Jon Brow]

What do you get when you differentiate y=3a+5b(squared)

[imull]

y=3+10b

i think. worrying how much i have forgotten since i finished uni lol

[Brown, Jon Brow]

Yep, i hope

[Alfa Fan]

Just done A levels maths, so its pretty good

The expression you gave, has 2 variables in it a & b, therefore you would need to inform us what you want to differentiate with respect too.

However, I believe you mean to differentiate the fuction y = 5x2 + 3x

In which case the differential, dy/dx = 10x + 3

[EuroTroll]

What do you get when you differentiate y=3a+5b(squared)

Finally a thread to replace the geography one as the most popular! :

I'd venture a guess that it's... oh, never mind.

[Brown, Jon Brow]

Just done A levels maths, so its pretty good

The expression you gave, has 2 variables in it a & b, therefore you would need to inform us what you want to differentiate with respect too.

However, I believe you mean to differentiate the fuction y = 5x2 + 3x

In which case the differential, dy/dx = 10x + 3

Yeah I wanted dy/dx

[Alfa Fan]

Now we've solved that one, I'll post something a bit trickier.

y = 5x3 + 4x2 + 7

Give me the turning points of the function

[Brown, Jon Brow]

Is that where Y=0 ?

Diffrential of Y=0

[Alfa Fan]

You need to differentiate the funtion with respect to X. Then do what you suggested The answer don't work out to exact decimals btw.

[Brown, Jon Brow]

Now we've solved that one, I'll post something a bit trickier.

y = 5x3 + 4x2 + 7

Give me the turning points of the function

Is the equation y=5 multiplied by3 etc.....

or y=5cubed etc.....