Question 230613: My problem is: solve log(x^2+3)=log(x+6) There is no log base, so do I set the ( )= ( )? Can this be worked on a graphing calc. TI-83 plus? If so, how do I enter it. I know where the log button is and y=button. Thank you. I'm trying to learn.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! My problem is: solve log(x^2+3)=log(x+6) There is no log base, so do I set the ( )= ( )? Can this be worked on a graphing calc. TI-83 plus? If so, how do I enter it. I know where the log button is and y=button. Thank you. I'm trying to learn.
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If the word "log" is used and the base is not specified it is
assumed to be 10.
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To solve just equation x^2+3 and x+6 and solve for "x":
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Yes, you could use the TI-83
Enter log(x^2+3) as Y1 and log(x+6) as Y2
Then select Zoom and then "0".
Then select CALC
Then select 5 Intersect
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Hit the "ENTER" key 3 times to find the intersection.
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Cheers,
Stan H.
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