C3 Help.

I can't see what you've written. Too many brackets. Also the use of - doesn't help especially in the first instance. I can hazard a guess though.

Sorry, the - is minus sign. I can't use latex .

That's not my problem. The first line. 1-(2). Are you saying 1-2 or is it question 1? and then it says -(2) ?

If it is minus 2, you end up with:

$\dfrac{12x}{(3x^{2} + 2)^{2}}$

Then you can just simply say $12x$ is always a postively value for x belonging to the positive real numbers. $(3x^{2} + 2)^{2}$ is postive regardless of whether or not x is negative or positive. Then just conclude saying that a positive value divided by a positive value is always positive.

Hi,

It's 1 minus the fraction numerator (2), denominator (3x^2+2)^2.

Alrighty then. Just read what I said in the previous post.

Alrighty then. Just read what I said in the previous post.

Isn't there a minus when it's differentiated though coming from the ^-1?