Math Is Fun Forum

Diane

Guest

fractional exponents

how do i solve (22/4)^3/2??? without using a calculator

All_Is_Number

Member

Registered: 2006-07-10

Posts: 258

Re: fractional exponents

how do i solve (22/4)^3/2??? without using a calculator

(11/2)^3/2 = 11/2 * sqrt(11/2) = 11/2 * sqrt(11) / sqrt(2)

If you are going to be doing maths without a calculator, I would highly recommend committing to memory or a reference table the square and cube roots of the first ten or more primes. Personally, I prefer the calculator

In this particular case:

sqrt(11) = ~3.31662

sqrt(2) = ~1.41421

11 * sqrt(11) / sqrt(2) = ~25.7973

Last edited by All_Is_Number (2006-07-24 16:17:22)

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MathsIsFun

Administrator

Registered: 2005-01-21

Posts: 7,711

Re: fractional exponents

Also Read: Fractional Exponents

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"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman