burhan101
Simplify this :
Delete
Share
This Question is Closed
burhan101
Best Response
You've already chosen the best response.
1
\[\frac{ [1-(1+3h+3h^2+3h^3)]-(2) }{ h }\]
lgbasallote
Best Response
You've already chosen the best response.
0
precalculus? or no?
burhan101
Best Response
You've already chosen the best response.
1
yes it is
lgbasallote
Best Response
You've already chosen the best response.
0
you should do 1 - (1 + 3h + 3h^2 + 3h^3) first
burhan101
Best Response
You've already chosen the best response.
1
ohh okay
burhan101
Best Response
You've already chosen the best response.
1
do i just get rid of the first round bracket?
burhan101
Best Response
You've already chosen the best response.
1
@lgbasallote
cruffo
Best Response
You've already chosen the best response.
1
correct. Distribute the - through [1 -1*( everything inside parenthesis) ]
burhan101
Best Response
You've already chosen the best response.
1
oh so you mutiply everything by -1 ?:S
burhan101
Best Response
You've already chosen the best response.
1
@cruffo
cruffo
Best Response
You've already chosen the best response.
1
sorry had to step away..
burhan101
Best Response
You've already chosen the best response.
1
it's alright :P
cruffo
Best Response
You've already chosen the best response.
1
correct:
\[\frac{ [1-(1+3h+3h^2+3h^3)]-(2) }{ h } = \frac{ [1-1-3h-3h^2-3h^3]-2 }{ h }\]
cruffo
Best Response
You've already chosen the best response.
1
but I'm curious: did you originally have to do 1-(1+h)^3 in the top?
burhan101
Best Response
You've already chosen the best response.
1
well i have this equation: \[y=1-x^3\] and i need to find the average slope of the line passig through A (-1,2) and Δx=h
burhan101
Best Response
You've already chosen the best response.
1
so that was what i came up with
cruffo
Best Response
You've already chosen the best response.
1
I think before you go any further, there is something that need to be corrected.
burhan101
Best Response
You've already chosen the best response.
1
ohh what ?
cruffo
Best Response
You've already chosen the best response.
1
Here x = -1, so you want
\[f(-1+h) = 1-(-1+h)^3 = 1-[(-1)^3 + 3(-1)^2h + 3(-1)h^2 + h^3\]
\[ = 1-(-1+3h-3h^2+h^3)\]
So the top would be
\[\frac{ [1-(-1+3h-3h^2+h^3)]-(2) }{ h } = \frac{ [1+1-3h+3h^2-h^3]-2 }{ h }\]
burhan101
Best Response
You've already chosen the best response.
1
then the -2 would cancel out with 2
burhan101
Best Response
You've already chosen the best response.
1
and we would factor out the h ?
cruffo
Best Response
You've already chosen the best response.
1
you got it.
burhan101
Best Response
You've already chosen the best response.
1
so m= \[3+3h-h^2\]
cruffo
Best Response
You've already chosen the best response.
1
yep.
burhan101
Best Response
You've already chosen the best response.
1
oh wrong signs
cruffo
Best Response
You've already chosen the best response.
1
hah. right. those pesky negatives...
burhan101
Best Response
You've already chosen the best response.
1
but my text book says the final answer is: \[-h2+3h-3\]
:S :S
cruffo
Best Response
You've already chosen the best response.
1
just rearrange the terms in decending order in h
burhan101
Best Response
You've already chosen the best response.
1
ohh it's the same thing .. :$ LOL i thought it was different haha :$
burhan101
Best Response
You've already chosen the best response.
1
thank-you so much :D !
cruffo
Best Response
You've already chosen the best response.
1
np!
burhan101
Best Response
You've already chosen the best response.
1
if part b says to calculate slope for h= 10,2,1,1/2 do i find the limits for his @cruffo ?
cruffo
Best Response
You've already chosen the best response.
1
Sorry for the delay.
cruffo
Best Response
You've already chosen the best response.
1
Should just be able to plug in the numbers for h in you previous answer, \[\large -h^2 + 3h - 3\]
burhan101
Best Response
You've already chosen the best response.
1
thanks :D