Solve for X

spacewater

Junior Member
Joined
Jul 10, 2009
Messages
67
problem \(\displaystyle f(x) = 0\)
\(\displaystyle x^4 = 2x^3+1\)

step
\(\displaystyle f(x) = -x^4+2x^3+1\)

this is where I got stuck, what is the next step to approach this problem?
 
spacewater said:
problem \(\displaystyle f(x) = 0\)
\(\displaystyle x^4 = 2x^3+1\)

step
\(\displaystyle f(x) = -x^4-2x^3+1\)

this is where I got stuck, what is the next step to approach this problem?

If x[sup:8uwophpd]4[/sup:8uwophpd] = 2x[sup:8uwophpd]3[/sup:8uwophpd]+1 then x[sup:8uwophpd]4[/sup:8uwophpd] - 2x[sup:8uwophpd]3[/sup:8uwophpd] - 1 = 0
 
Loren said:
spacewater said:
problem \(\displaystyle f(x) = 0\)
\(\displaystyle x^4 = 2x^3+1\)

step
\(\displaystyle f(x) = -x^4-2x^3+1\)

this is where I got stuck, what is the next step to approach this problem?

If x[sup:pxvvzsf0]4[/sup:pxvvzsf0] = 2x[sup:pxvvzsf0]3[/sup:pxvvzsf0]+1 then x[sup:pxvvzsf0]4[/sup:pxvvzsf0] - 2x[sup:pxvvzsf0]3[/sup:pxvvzsf0] - 1 = 0

right, this is where I am stuck...
 
You haven't told us what you are trying to do. And you should note that what I wrote is different than your original statement.
 
spacewater said:
problem \(\displaystyle f(x) = 0\)
\(\displaystyle x^4 = 2x^3+1\)

step
\(\displaystyle f(x) = -x^4+2x^3+1\)

this is where I got stuck, what is the next step to approach this problem?

Please post the EXACT problem - as it was presented to you.
 
SOrry for the confusion guys. I had to use the graphing Utility for this problem. :lol: :oops:
 
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