Question about Texas Instruments TI-30XA Calculator

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How do i multiply 1.04 to the 5th power using the TI-30XA calculator?

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To raise 1.04 to the fifth power, press
1 . 0 4 y^x 5 =

y^x is the key just above the divide key.

Posted on Feb 20, 2011


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The initial population of a town is 2800, and it grows with a doubling time of 10 years. Whay wi the population be in 12 years

The population doubles in ten years so the annual growth is the tenth root of two. The growth in twelve years is the annual growth rate raised to the twelfth power.

The tenth root of two is about 1.0718 . That value raised to the twelfth power is about 2.2974 . Multiplied by the initial population of 2800 gives 6433.

On the TI-30XA press 2 2nd [xth-root] 1 0 = y^x 1 2 * 2 8 0 0 =

5000e to the (0.08)power time (2)

On this calculator the exponential function requires the argument be entered first. To calculate the exponential of a number, you enter the exponent (0.08) then press [2nd][LN].
For your calculation, you should calculate e^(0.08) then multiply the result by (5000x2=10000). The result should be 10 832.87068

I am trying to multiply in scientific notation but I don't how to do it when the power of 10 is a negative i.e 1.67 time 10 to the 21st power multiplied by 9.11 times 10 to the -31 power. thank you

Make sure you use the +/- key just to the right of the decimal point key when entering negative values, including exponents.

1 . 6 7 EE 2 1 * 9 . 1 1 EE +/- 3 1 =

I want to multiply 1.66 X 10 to the minus 27 Using a TI-30XA

What do you want to multiply it by? As an example, to multiply it by three, press
1 . 6 6 EE 1 0 +/- 2 7 * 3 =

EE is the key just above the 7 key, +/- is the key just to the right of the decimal point key.

I'm trying to multiply 1 by 10 to the negative power of 4. Can't seem to find out how to make the 10^-4 work.

Press 1 EE +/- 4

EE is the key just above the 7 key, +/- is the key just to the right of the decimal point key. Don't use the - key, that's for subtraction not negation.

I have a ti-30xa and need to convert metric t standard or other way around

Sorry, the TI-30XA does not offer unit conversion functions other than angle units. The best thing you can do is to get the conversion factor from a table in a book, or look it up in the internet, and store it into one of the three M memory places of the calculator.
Use the memory recall and divide or multiply to convert.

Example: Convert metric tons (Mg) to international avoirdupois pound (lb), and vice versa. Conversion factor is:
1 lb = 453.5937 Mg.
  • Key in 453.5937 [STO] [0] to put the conversion factor in memory 0.
  • To convert 17 Mg to lb, key in: 17 [÷] [RCL] [0] [=].
  • To convert 5 lb to Mg, key in: 5 [×] [RCL] [0] [=].

Try to multiply (20x10-9) (1x10-9)

If you use the exponent rules you do not need to use a
calculator for this particular case. Anyway to enter power of 10 exponents you use the [EE] key. See screen capture below.

20 [EE] (+ -)9 [X] 1[EE] (+ -) 9


Negative 1/6 *2 3/4

Pressing ( 7 / 8 ) + ( +<>- 2 / 7 ) = will produce the answer on the TI-30XA.

+<>- is the key to the right of the decimal point.

Inputing Scientific Numbers

If you mean using the "EE" key it's straightforward.

To enter scientific numbers, enter the number, then press EE, then the exponent value. The TI-30XA will stay in scientific display until you "clear" or turn it off. It will also switch to scientific notation if you multiply big numbers that exceed the display.

E.g. Input 3, EE, 10, X, 3, EE, 10, =, gives you the answer 9 times 10 to the power 20. Press the "square root" key and you will get back 3 times 10 to the power 10.

You can mix entries too, e.g. 3, EE, 10, X, 2, =, gives you 6 times 10 the power 10....
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