(1) Given
(a)
Can you continue from here ?
(b) = 1/2x
(2)
Cancel logs from both sides , then
Take away logs from both sides .....
(3)
Try continue from here ...
If log3 4=X express each of the following in terms of x
a) log3 16-2log3 32 b)log3 2
Express y as a function of x. state the domain
a)logY = log(1-3x)
b)log2 (y-3) = 5 + log2 (x-4)
solve and check
a)2logM + 3logM =10
Hi i am totally stuck with those log questions
can anyone show me how to do it in full steps?
i tried the last one 2logM + 3logM =10 i got stuck after moving the 2 to the power of M.
for the other ones i dont have any idea on how to start on it..ty
1)
a)u cancel the logs than turn 4^(1/2)^10 into 4^5?
then 4^(2-5) like this? Then i got stuck again >.< sry
and for B how did u get 1/2x right away?
2)i dont understand what "y as a function of x" means. What are you actually looking for?
3)
" alt="lgM^5=10
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5=M^10
then i got stuck again>.< do you square root the 5 10 times?
>.<ty
1. Keep in mind that
2. From
3. I guess 1)(b) is obvious right now. (See my initial remark)
4. You are asked to derive an equation where y is expressed by x. In other words: Solve the given equation for y and look what happens to the x.
a) The base of these logs isn't specified so you can use any base. (Mathaddict has used the base 10). Use the logs as exponents to a base and you'll get:
This equation describes a function y of x.
b) The base is 2. Use this base and the given logarithms (=exponents) to get rid of the logarithms:
solve and check
a)
If you use then the equation becomes:
ty>.<
but i still don't understand the first question
how did u get 2\log_3(4)-5\log_3(4) = 2x-5x = -3x? where did the X came from and can't u just add the exponents? since the have the same base. also on my text the answer is suppose to be 1 + 3X why?
and i got another question
log3 2 = x (same as question one
a)log3 8
i got the the point where log8/log3 =x after i done that i got 1.8xxxxx. but the answer is 3X..
============
log3 4=x
a)log3 16- 2log3 32
i got to the point where 3log3 4 - 8log3 4 and came out with an answer -5X, but in the text it saids the answer is -3X....help>.<
================
slove for X
log8 x-1 = log8 (x-1)
i canceled log8 out from both sides and got x-1 = x-1...... ?= -2 stuck...why can't u just cancel both sides and find the answer>.< log is so complicated>.< help
====================
solve and check
log4 (x+2) + log4 ( x-1) =1
got stuck when i got to x^2+ x-3=0 can't factor..