VCE Specialist 3/4 Question Thread!

[Lasercookie]

Yes, they would have a slight effect on it as well. If you need to, draw the regular cosine graph and find your x-intercepts.

It won't have an affect on the vertical asymptote though. The and the affect the y-coordinates, so it doesn't really move the vertical asymptote around.

[Homer]

It won't have an affect on the vertical asymptote though. The and the affect the y-coordinates, so it doesn't really move the vertical asymptote around.

Oh yes offcourse haha, thanks laseredd

[Homer]

Also how would i find the turning point of the function. I know it'd be the same as the reciprocal function (cosine function), but idk what to use lol :/

[Stick]

Half way between your asymptotes.

[Homer]

Thanks for your help guys

[Homer]

how would i simplify this

[Hancock]

=

DOPS
=

Knowing that
=

Knowing that
=

[Homer]

I don't understand the last step, cos2(x)-sin2(x)=cos(2x)

[Stick]

It's one of the double angle formulae. Have you learnt this yet?

[pi]

See the formula sheet

[Homer]

Nah i havent, plus the answers is sin2(x)-cos2(x), but will look through it

[Stick]

That's the problem with simplifying questions - you can come to all sorts of conclusions. That's why I prefer proving questions.

[Hancock]

If that's the answer Jai, you just stop before my last step. Otherwise, the final step is done by seeing the formula sheet like others have said. Hope it helped.

[Truck]

If it was an exam, -cos(2x) would probably be the one to get it to .

[Homer]

If and find the exact values of