Radical Notation and Rational Exponents
| Square Root
• Not part of a tree
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| nth root A number c is the nth root of a if,
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| Properties of Radicals
If n is even If n is odd
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Rational Exponents
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The imaginary #
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Taking roots with the TI-84 Square roots Method 1 – hit [  ], enter the number,
close the paren, hit [enter]Method 2 – put in the number, hit [^], open a paren, type ½, close the paren, hit [enter] Remember, this works because the index on the radical can be written as a rational (fractional) exponent |
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| Cube roots Method 1 – hit [ Math], [4], enter the number, close the paren, hit [enter] Method 2 – put in the number, hit [^], open a paren, type 1/3 close the paren, hit [enter] Remember, this works because the index on the radical can be written as a rational (fractional) exponent |
nth roots Method 1 – type the index first, hit [ Math], [5], enter the number, hit [enter] Method 2 – put in the number, hit [^], open a paren, type 1/n close the paren, hit [enter] Remember, this works because the index on the radical can be written as a rational (fractional) exponent |
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| EXACT Answers You must be able to use the calculator for HW and decimal approximations are fine there You must also be able to give me EXACT Answers for tests |
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