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airyana1114

  • one year ago

Let f(x)=2x+2. Solve f^-1(x) when x=4. I believe I know how to do this problem, if someone would just walk through it with me.

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  1. anonymous
    • one year ago
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    First you need to find the inverse function. Do you know how to do that?

  2. airyana1114
    • one year ago
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    I believe so. My first step to finding the inverse function would be to replace f^-1 with y and then switch my x and y variables right? @Tommynaiter

  3. anonymous
    • one year ago
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    Yes, that is correct. You switch x and y and then isolate y. If you do this, what function do you get then?

  4. airyana1114
    • one year ago
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    I got |dw:1442875997469:dw|

  5. anonymous
    • one year ago
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    Yeap! That is the inverse function, now you just insert 4 and solve it :)

  6. anonymous
    • one year ago
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    Yes

  7. airyana1114
    • one year ago
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    Thank you! @Tommynaiter

  8. anonymous
    • one year ago
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    You're welcome :)

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