Author Topic: TI-89 solving for inverse (Read 1791 times) Tweet Share

TrueTears · « **on:** October 19, 2009, 09:23:03 pm »

What happens when you type this?

solve( $600 \log_e\left( \frac{x}{60} \right)$ = y, x)

I get overflow, FA gets false.

??

lacoste · « **Reply #1 on:** October 19, 2009, 10:53:29 pm »

I get x= 60*e^y/600 and e (greater than equal) to 0

/0 · « **Reply #2 on:** October 19, 2009, 10:54:08 pm »

I also get false

TrueTears · « **Reply #3 on:** October 19, 2009, 11:00:26 pm »

I get x= 60*e^y/600 and e (greater than equal) to 0

yea should be that but the calc screws up lol

Gloamglozer · « **Reply #4 on:** October 20, 2009, 12:54:38 pm »

I get false as well but like TT:

Quote

Warning: Overflow replaced by $\infty$ or $- \infty$

Tried both radian and degree mode.

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