SOLUTION: How would you graph this logarithm statement on a graphing calculator? f(x)= log_3.9 x+2 And the x+2 are not in parenthesis . I know how you would graph it if the x+2 were

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: How would you graph this logarithm statement on a graphing calculator? f(x)= log_3.9 x+2 And the x+2 are not in parenthesis . I know how you would graph it if the x+2 were       Log On


   

Question 841570: How would you graph this logarithm statement on a graphing calculator?
f(x)= log_3.9 x+2
And the x+2 are not in parenthesis . I know how you would graph it if the x+2 were in parenthesis which would be y= log(x+2)/log(3.9)
But since the x+2 is not in parenthesis, would this differ if it were in parenthesis? Thanks for any help.
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
sometimes they are written without the parentheses.
it's not very clear that way, so the used of the parentheses is preferred, but i would assume that the x+2 is the log they want you to take.

there's 2 ways to interpret it without the parenthese.

that would be:

log3.9(x+2)

log3.9(x) + 2

for example:

if i put in algebra.com log(3.9,x+2), it will show me log%283.9%2Cx%2B2%29

as you can see, the x+2 is not in parentheses.

If I want to slow it in parentheses, I would have to make a special effort to place it in the formula generator.

I would then makes log(3.9,(x+2)) which would show up as log%283.9%2C%28x%2B2%29%29.

Note that the 3.9 is the base and is usually subscripted but a lot of people just type it after the log, like in log3.9 with the implication that the 3.9 is the base.

Not using the parentheses can lead to confusioon which is why I always use it even though I've seen other not.