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January 27, 2015

January 27, 2015

Posted by **L.P.** on Wednesday, November 18, 2009 at 9:12pm.

equation is: 3.9*10^-11 = 4*X^3

so I simplify and get:

9.75*10^-12 = x^3

but now how to solve on calculator?

- cubic function -
**bobpursley**, Wednesday, November 18, 2009 at 9:20pmthe x

^{y}key allows cube roots.

( some calc have it as y^{x}key)

for instance, the cube root of 27

enter 27

press x^{y}

enter (1 divide 3 )

you should see 3, and some will require you to press enter.

- cubic function -
**L.P.**, Wednesday, November 18, 2009 at 9:25pmokay sounds easy but I have a TI-84+ and I don't see that key.

also will this work for say x^5 or x^4?

If you don't have this key how would you solve it?

- cubic function -
**bobpursley**, Wednesday, November 18, 2009 at 9:44pmyes, works for any root, or power.

If you dont have that key, you can do it with logs....

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