Piece Functions evaluate the functi  TOPIC_SOLVED

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Piece Functions evaluate the functi

Postby trey33 on Mon Oct 03, 2011 6:08 am

The work sheet is called Piece functions.
It says to evaluate the functions for the given value of X.



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I can't figure out what it wants me to do. Isn't f(x)=5x-1 if x<-2 a problem, f(x)=5(-2)-1= fx=-11
But there is no place for an answer and #1 has an f(-4).

None of this makes sense to me! can anyone tell me how to do the page? If I do plug the numbers in then problem 2 wouldn't be able to be worked because it is f(-2) and it says on the left that if x<-2

thank you in advance for any help you can give.
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Postby stapel_eliz on Mon Oct 03, 2011 12:09 pm

trey33 wrote:


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I can't figure out what it wants me to do.

It wants you to take the given x-value, look at the rule for the function, figure out which half of the rule applies to that x-value, plug that x-value into that rule, and simplify to find the requested value.

For instance, given f(-3), you would use the first half of the rule for f(x), since -3 fits into "less than -2"; given h(37), you would use the second half of the rule for h(x), since 37 fits into "more than 6". And so forth. :wink:
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