- #1

edmondng

- 159

- 0

Title is a bit off but i don't know what it is called.

Basically,

If you have something like

3.35*10^10 = (400)^(4-x) - (300)^(4-x) and you want to solve for x.

Putting inside TI89, i get the answer x = -0.106072

But what if you do not have any calculator. I'm just wondering because i have a lot of numbers to solve and want to do it in software. I would have to import a lot of data, and each data is independent from each other. Doing manually would work but will take weeks.

edit: ok i took the natural log both sides.

would it come out like this: ln(3.35*10^10) = (4-x)ln(400) - (4-x)ln(300). actually what happens when you have a minus? a ln of division results in minus but how about minus before ln

Thanks

Basically,

If you have something like

3.35*10^10 = (400)^(4-x) - (300)^(4-x) and you want to solve for x.

Putting inside TI89, i get the answer x = -0.106072

But what if you do not have any calculator. I'm just wondering because i have a lot of numbers to solve and want to do it in software. I would have to import a lot of data, and each data is independent from each other. Doing manually would work but will take weeks.

edit: ok i took the natural log both sides.

would it come out like this: ln(3.35*10^10) = (4-x)ln(400) - (4-x)ln(300). actually what happens when you have a minus? a ln of division results in minus but how about minus before ln

Thanks

Last edited: