Recent content by hostergaard

Homework Statement http://img42.imageshack.us/img42/1231/lobgave.jpg Homework Equations The Attempt at a Solution i think that solution shuld look something like this: (x-a)2*(x-k) but I am pretty lost, so i need some help...:cry:

Here is it finished, could somebody prof-read it and comment? tell if there's some improvements to be done. ;-) http://img33.imageshack.us/img33/72/opgave3.th.jpg

ok! i will try that. :smile:

Homework Statement http://img33.imageshack.us/img33/1231/lobgave.th.jpg Homework Equations The Attempt at a Solution It's the solution, but i have a feeling that there is a more correct way of doing it. At least i need a way to write it so it is mathematical...

ohh, wait. I wass up 2'o clock in hte night doing this and i somehow tough 1=y. really, staying up that late melts my brain... but what can i do? I live in eroupe and that's the only time the american conticent are awake (aviable at the computer, that is)... ok so we get the equation...

to sum up; the answer should be z=2*2.3-4.0444... Is this wrong? somebdy please check this answer! :-)

wich would make b=-4.04444...

so i have to make quess on what x is in this given case? which would be 2,3...

fot that point, that is...

then 5/9=2x+b?

errr, y=ax+b? and, ohh, i remember gradient is the slope of line which is a. so in this case y=2x+b?

what is a gradient? (it is the midle of the nigth here...)

first i have to remove the log, that is to put it into y side of the equation. agh, sorry. It's the midle of the night were i am sitting rigth now, so i am strugeling a bit.

wait, f(z)=x?

well, if y is a function of z then f(x) must also be function of z so, f-1(x)--> z=log3(y)? hmm...