Im stuck on an equation. Anyone good at Logs?
[Q] Solve: Log2X + Log4X = 2
I got to the next bit with the change of base rule:
(Log10X / Log102) + (Log10X / Log104) = 2
Now Im stuck.
Im stuck on an equation. Anyone good at Logs?
[Q] Solve: Log2X + Log4X = 2
I got to the next bit with the change of base rule:
(Log10X / Log102) + (Log10X / Log104) = 2
Now Im stuck.
you can write the sum of two logs as the multiplication of the 2x and the 4x.
taking the antilog of both sides
(2x)*(4x) = antilog of 2
8x^2 = 100
x = 3.5355
e: vdk[at]theasianplace[dot]net
MAAAA, THE MEATLOAF..... FUCK!
"I'm not heterosexual, homosexual, or bisexual. I'm just sexual. NO. MOTHERF*CKING. PREFIX.\"
Aha....so the change of base was going down the wrong way.
Cheers for that voodoo!
no worries!
e: vdk[at]theasianplace[dot]net
MAAAA, THE MEATLOAF..... FUCK!
"I'm not heterosexual, homosexual, or bisexual. I'm just sexual. NO. MOTHERF*CKING. PREFIX.\"
Right, Voodoo or anyone else good at le mathmetique, I am in another Log predicament.
Question:
"Solve the simulatanoues equations leaving your answer as an exact fraction":
[E1] 8Y = 42X+3
[E2] Log2Y = log2X + 4
What voodoo stated before, taking the anitlogs: I dont know if this is the right direction to take but, I took the anti logs of [E2]. That left me with:
Y = X + 4
Then I subsituted this "X + 4" as "Y" into [E1] so I got:
8X+4 = 42X+3
Therefore this gives:
(84)(X4) = 42X+3
And Now Im Stuck. Help
Last edited by Zero; 09-05-2007 at 23:49.
Oh bluddy hell, the indices didnt come out right.!!
Leave it peeps.
Last edited by Zero; 09-05-2007 at 23:53.
No, theres one problem:Originally Posted by AmericanBoi
In [E1] the "Y" is the power raised to 8.
and in [E2] "2X + 3" is the power raised to 4.
So it makes life difficult.
Help me please.
The working under the [E1] and [E2] is mine. I dunno if that is right.
LOL I'm keeping out of this one.
I'm glad I didn't take maths any further!
I mean nobody likes me, everybody hates me, keep that shit coming, watch how much stronger it makes me!
Its not like I idolize this Machiavelli I idolize that type of thinking where you do what evers gonna make you achieve ur goals
We touched on this in college it was a nightmare to do!
I mean nobody likes me, everybody hates me, keep that shit coming, watch how much stronger it makes me!
Its not like I idolize this Machiavelli I idolize that type of thinking where you do what evers gonna make you achieve ur goals
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