onur369's Methods Question Thread :)

[xZero]

so we have and

the gradient of PQ is

sub the points in and you'll get E

[onur369]

If possible can you explain with a little more detail please?

[xZero]

From the question we know that we have two points, P and Q and their co-ordinates are and

The first step is to find and , since we have the function we can sub in our x coordinates in to find y respectively and we will get and which becomes

The gradient of the chord PQ is just asking you to find the change in y in respect of x from P to Q

,

[onur369]

Guys im stuck on one more question, pretty simple one too

find derivative of:
4ln(sqroot 2-x^2)

[xZero]

use the chain rule, let







,

Edit: blah my bad

[m@tty]

^minor correction, but the domain should be

because the original function is not defined when |x| is root 2, as it results in ln(0).

[Respect]

I cant solve this.

Find the derivative of  that.. how do i used the product rule.. because i seem yo keep gettin the  wrong answer which is//

3/(x-2)^2

but the right answer is E.. can someone solve it?

[xZero]

use the quotient rule instead

[Respect]

use the quotient rule instead

sorry i meant i was using the quotient rule...  but i still seem to get it wrong.. idk what program ur using to write that math equations but what i do is, 1 sec. ill show u

[jasoN-]

or quotient rule

[Respect]

or quotient rule

ohh!! lol.. i was writing the forumla wrong.. instead i was writing

u`v - v`u
________
     v^2

[m@tty]

use the quotient rule instead

Or product rule:

[onur369]

I know how to do the question but again im just asking just to make sure, there a multiple ways of differentiating.

Which method should I use for the question below

[m@tty]

I would go



As required.

[onur369]

We have done it the same way