If f(x) is a function and f(1) = 5, then which of the following could not be true?

1) f(1)=1

2) f(2)=1

3) f(5)=5

Question

If f(x) is a function and f(1) = 5, then which of the following could not be true?

1) f(1)=1

2) f(2)=1

3) f(5)=5

anonymous · Answer

I don't know ? I need help

anonymous · Answer

@Bebong bas mistake

anonymous · Answer

do you know how a function is defined?

anonymous · Answer

what are the requirement conditions for f to be a function? got it?

anonymous · Answer

no why did you answer?

anonymous · Answer

$$f(1) \neq 1$$ a function is defined as of each input value, you'll only get one output value. Therefore f(1) = 1 is not true.

anonymous · Answer

if f(1)=1 and f(1)=5, then this function never satisfies the one-to-one condition. so it won't be a function unless ....

anonymous · Answer

unless f(1) takes only one value...

anonymous · Answer

Umm?

anonymous · Answer

your reasoning led to a response by chance. it always might not be true