2007-09-26 12:36:32 · 3 answers · asked by . 1 in Science & Mathematics ➔ Mathematics
To make that expression undefined, you would need to divide by zero, so the denominator would have to equal zero. So:
6 - z = 0
the only number that z could be is 6.
2007-09-26 12:39:56 · answer #1 · answered by Carlos V 1 · 0⤊ 0⤋
Undefined is whenthe answer toa problem has no linmits or can not be defined. In this case anything divided by 0 is undefiend..therefore if z=6 the denominator is zero therefore the expression is undefined. when the numerator is zero the answer is always zero so the answer z=6..good luck
2007-09-26 12:43:03 · answer #2 · answered by MIKE B 1 · 0⤊ 0⤋
You have to look for values of z that will make the expression impossible to evaluated (therefore, it cannot be "defined").
For example, dividing anything by zero cannot be defined.
(However, dividing 0 by something that is not zero, is OK).
2007-09-26 12:41:00 · answer #3 · answered by Raymond 7 · 0⤊ 0⤋