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anonymous

  • one year ago

If f(x) = x + 4 and g(x) = 2x - 3, find (g - f)(2).

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  1. anonymous
    • one year ago
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    \( (g-f)(2) = g(2) - f(2)\) Can you do the next step?

  2. anonymous
    • one year ago
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    No .. im sorry i really dont know this . @OneMathCat

  3. anonymous
    • one year ago
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    \(g(x) = 2x - 3\) \(g(2) = 2\cdot 2 - 3\) Do you see the pattern?

  4. Hero
    • one year ago
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    @ onemathcat, you have to be careful with the way you explain things. Let's assume the user understands everything you explain to her , but then she goes to school the next day, and even though She has the correct Answer and all the steps, the teacher proceeds to ask her, What is (g-f)(x)? With your limited explanation, she may not be able to answer the teacher's question.

  5. anonymous
    • one year ago
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    this is an online class , she doesnt ask anything . Thank you for saying that though @Hero . I dont understand though ..

  6. anonymous
    • one year ago
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    @Hero Hi ... I certainly wasn't intending to stop there! But, there was no one in sight ... evidently the user had gone offline. What is the recommendation at that point? Should you then type out the complete answer? I know the code of honor is certainly NOT just to give the answer...

  7. Hero
    • one year ago
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    Not every student here is taking online classes.

  8. anonymous
    • one year ago
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    but i am , and i still dont understand ..

  9. Hero
    • one year ago
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    What gm trying to suggest here is to Compute (g-f)(x) first before computing (g-f)(2)

  10. anonymous
    • one year ago
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    When you see \(g(x) = 2x - 3\), it's what is called "function notation". Think of it this way: g(blah) = 2(blah) - 3. So: g(1) = 2(1) - 3 g(2) = 2(2) - 3 g(10.7) = 2(10.7) - 3 Are you seeing the pattern?

  11. anonymous
    • one year ago
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    where did 1 come from ?

  12. anonymous
    • one year ago
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    and 2?

  13. anonymous
    • one year ago
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    @Hero I'm happy to have you take over. No problem. Have a great day!

  14. Hero
    • one year ago
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    I don't want to takeover.

  15. anonymous
    • one year ago
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    did someone get 2x+2 ??

  16. anonymous
    • one year ago
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    @Hero

  17. Hero
    • one year ago
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    Explain how you got 2x+2

  18. anonymous
    • one year ago
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    2x-3 - 4x+4 which gave me x+1 and i multiplied that by 2

  19. Hero
    • one year ago
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    Somehow you've managed to confuse yourself

  20. anonymous
    • one year ago
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    but thats what it said right

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spraguer (Moderator)
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