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Math Help - continous

  1. #1
    Junior Member
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    continous

    For what value of the constant c is the function f continuous on (-, )?



    I'm just sitting here with a face like this --->

    Do I need to factor something? Or rationalize?
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  2. #2
    Super Member Matt Westwood's Avatar
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    For f to be continuous it needs to not have any jumps in it. Especially at x=2.

    So you want to find c so that c (2^2) + 2 \times 2 = 2^3 - c \times 2 (by sticking x=2 into both the parts of that equation and making them equal).
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  3. #3
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    nice, thatís really cleary explained Matt +1 rep from me
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