Challenge for people who loves maths..

[AS-Girl]

Hi

I have these questions which i didnt understand, so i was wondering if someone can solve these 4 questions and scan the working out..

The most important thing to me is the working out and explanation...I wrote the answer at the end of each question..Thought it would be helpful

Thanks

[AS-Girl]

c'mmon

[elemis]

I've done the first one.

Explanation coming up

[elemis]

is the same as :

If  then a^-1 =

Hence, can be simplified as follows :



Thus, 3^x = a^-1

Inputting a^-1 into the red colour equation gives :

3 * (a^-1)²

Giving 3 * a^-2


Which is basically :

[AS-Girl]

Got it! thanks Ari Ben Canaan   

need the 3 other questions !!

[Twinkle Charms]

Answer4)

hog(x) is same as hg(x)

g(x)=x/(x+1)

therefore for h(g(x)) u substitute g(x) in place of x in h(x) like this:

h(x)=2x-1 ; in place of x you subs. x/(x+1); ull get : 2x/(x+1)  - 1 ;  equalise the denominator by multiplyin (x+1) and multiply the numerator with (x+1) also, giving you (2x-x-1)/(x+1) = (x-1)/(x+1) .

[AS-Girl]

Thanks Twinkle Charms!! it really helped 

2 questions left...

[Alpha]

Coming 

[AS-Girl]

Thanks Alpha..you saved my life 

Thanks everyone..once again

That's why i love SF hehe

[Alpha]

You're most welcome.

I love it too. <3