Q1.

[andy456]

I stuffed up this big time
I wrote the inverse was:


is this wrong??

[uhmmaybe]

Yeah cus it's x+1

[Stroodle]

Yep, unfortunately that's wrong

[andy456]

Yeah cus it's x+1

how is it x+1

This is what I did






I graphed it and my equation is the same as

[uhmmaybe]

Oh gosh, I'm so sorry!
I did that too and I'm sure it's right... the one in your opening post though.
The one you just posted is completely different.

[rk]

I stuffed up this big time
I wrote the inverse was:


is this wrong??

WHY THE HELL DO YOU CARE LOL

[mmmmm]

Yeah cus it's x+1

how is it x+1

This is what I did






I graphed it and my equation is the same as

You don't have to show working out do you? I just wrote whatever my calc said..

[m@tty]

It was three marks, so you'd want some working there.

[mmmmm]

It was three marks, so you'd want some working there.

Ah crap. There goes another mark.

[lachymm]

dw man people got absolutely slaughtered out there...one mark wont do much in the scheme of things.

[thushan]

You wouldn't need working there - you'd need:

Interchange x and y (1)
Rule (1)
Domain (1)

[m@tty]

That sucks.. If that's true you could just chuck it in your calculator. xD Poor form VCAA.

[thushan]

That's what you're meant to do
That qn tests whether you can do the qn on your calc - the working out is important for exam 1

[YDragon]

The equation in your first post is equivalent to the "typical" answer whereas the one in the second isn't.
Most people would have taken divided by the 2 before raising it to e, which is why you have a square root (since you applied the power property of logs).

[andy456]

The equation in your first post is equivalent to the "typical" answer whereas the one in the second isn't.
Most people would have taken divided by the 2 before raising it to e, which is why you have a square root (since you applied the power property of logs).

wait so my first post had the right answer in it??

I stuffed up this big time
I wrote the inverse was:


is this wrong??