# i need help on scientific calculator press

Discussion in 'Homework Help' started by hkra, Jul 8, 2005.

1. ### hkra Thread Starter Member

Jul 3, 2005
18
0
http://tinypic.com/6xrfgp.jpg

see the picture

how to calculate between 10-4

my scientific calculator have no -4

how to press can show me this formula?

the answer is = 2.513 /_ 89.8º

i just wanna know how to calculate the 10-4

Jul 3, 2005
18
0
fx-570W

3. ### n9xv Senior Member

Jan 18, 2005
329
1
On most calculators there is a key labeled "EXP" that stands for EXPONENT. The key is usually programed to mean "X 10 to the EXPONENT of" and then you press the negative key " - " and then press the number " 4 " key. So, in your problem it would be;

2.513 then press "EXP" then press " - " then press " 4 ".

You can also do it this way;

Anytime you see the base 10 to a negative exponent, you must have enough zero's + 1 to equal the exponent, like this;

10^-4 means .0001

a decimal followed by three zero's and ALWAYS ending with a one.

10^-6 means - - - .000001 - - - decimal then five zero's and a one.

4. ### hgmjr Moderator

Jan 28, 2005
9,030
214
The users manual for the calculator would be the best place to look for this information.

hgmjr

5. ### hkra Thread Starter Member

Jul 3, 2005
18
0
great! i get the answer. thanks JoeJester ,n9xv and hgmjr
sorry me forgot everything i have the last 2 subjects to resit before graduted

but n9xv 10^ the ^ no such charracter on my scientific calculator

6. ### hkra Thread Starter Member

Jul 3, 2005
18
0
thank you very much. i understood