Homework SourseDefine a function f from the product Z Z to Z by fa b ab I
| Define a function f from the product Z × Z to Z by f(a, b) = ab. Is the function onto? | ||||||
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| Define a function f from the product Z × Z to Z by f(a, b) = ab. Is the function onto? | ||||||
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Solution
A. True
We can set a=1 and function would be
f(1,b)=b
So we can vary b over all of Z and hence range of f would be all of Z
