Question about Texas Instruments TI-83 Plus Calculator
To raise a number to an arbitrary power you use the [^] key below [CLEAR]
7.5 to power 4 is entered as follows
7.5 [^]4 [ENTER] gives 3164.0625
Other exemples (if you are interested)
Fifth root of 300 is enterd as 300[^](1/5) [ENTER]
If you raise a number to a negative power use the small minus sign (-)
157 to power of -3
157 [^][(-)]3 [ENTER] gives 2.584E-7 =2.584x10^(-7).
Hope it helps
Posted on Sep 10, 2009
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Posted on Jan 02, 2017
There is a rule of Algebra, that says
(a^m)[x] (a^n) = a^(m+n)
a is the base of the power, n, and m are the exponents. As you can see, multiplying two powers of the same base is equal to the power of the (common) base with the sum of the exponents.
If that is what you had in mind, the calculator uses the rule correctly and no intervention from you is necessary.
If you enter (2^4)[x](2^6), the calculator will give 1024, which is 2^10.
I may be wrong, but what you call add exponents refers really to performing addition where addends (the terms you add) are arbitrary powers, such as
2^7 + (5.5^3) - (1/3)^4
Once you enter a power term, the calculator calculates it and the result is now just a number. It can be added, subtracted, multiplied
For the exemple above
2 [Y to the x] 7 + (5.5)[Y to the x] 3 -(1/3) [Y to the x] 4 [=] yields 294.3626543
For the cube of 5.5 you can use the key combination [2nd][X^3]
Hope it helps.
Posted on Oct 13, 2009
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