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anonymous
 5 years ago
find any real number for which the rational expression is undefined a5/7
anonymous
 5 years ago
find any real number for which the rational expression is undefined a5/7

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0is it (a5)/7 or a(5/7)???

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0it's defined for all values of a.. if you were asking about \[7 \over a5\] then it would be undefined at \[a5=0 \implies a=5\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so then answer would be 0 or 5?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the answer to your question would be "phi" (since there is no a where (a5)/7 the expression undefined)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I meant by phi the empty set.. looks I am complicating things!! :) you just need to know that the expression you gave is defined for all values of a. that's it
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