Melody

Thanks Alan   

Thanks guys   

Fri 12/6/15

If you would like to comment on other site issues please do so on the Lantern Thread.  Thank you.    

Interest Posts: 

FTJ means 'For the juniors' 

Well lets see if I can use Chris's shortcut that he just showed me

asymptote at

$$\\y=\frac{2*5x^2}{-7x^2}\\\\
y=\frac{-10}{7}\\\\$$

Is that right?   I know I could check myself but I am being lazy :/

Oh ok thanks Chris :)

It is just

(-8-16)/4 =  -24/4 =  -6

That is,

the temp drops by an average of 6 degrees per hour     

Thanks Chris and Heureka,

That makes sense  

2p^2+3p+1=0

You need 2 numbers that mult to 2*1=2  and add to 3     That will be  2 and 1

now replace 3p with 2p+1p

$$\\2p^2+3p+1=0\\\\
2p^2+2p+1p+1=0\\\\
$now factor in pairs$\\\\
2p(p+1)+1(p+1)=0\\\\
(2p+1)(p+1)=0\\\\
2p+1=0\;\;or\;\;p+1=0\\\\$$

And you can finish it :)

$$\\\frac{- 9}{u }= -6\\\\
$Multiply both sides by u$\\\\
-9=-6u\\\\
$Divide both sides by -6$\\\\
\frac{-9}{-6}=u\\\\
u=\frac{3}{2}\\\\
u=1\frac{1}{2}\\\\$$

Thanks Chris and Heureka  

What sort of differentiation is implicit?  What does implicit mean in this context?