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toxicsugar22

  • 5 years ago

A doctor who is treated a heart patient wants to presicribe medication to lowere the patients blood pressure. The body's reaction to this medication is a function of the dose admininistered. If the patient takes x milliters of the medication, his blood pressure should decrease by r=f(x) points where f(x)=3x^2-1/3x^3 1. For what values of x is R=0

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  1. anonymous
    • 5 years ago
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    So you are trying to find when R = 0, which is when f(x) = 0, which is when 3x^2-1/3x^3 = 0 Start by factoring, what factors are common in both terms on the left of the equation?

  2. toxicsugar22
    • 5 years ago
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    3x

  3. toxicsugar22
    • 5 years ago
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    i guess

  4. anonymous
    • 5 years ago
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    There's more...

  5. toxicsugar22
    • 5 years ago
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    i d k

  6. anonymous
    • 5 years ago
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    ok, not 3, but yes x, and another x can be factored out too: x^2(3 - 1/3x) = 0 Then each part can equal zero to make the whole thing equal zero because they are being multiplied

  7. anonymous
    • 5 years ago
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    ...so solve x^2 = 0 and 3-1/3x = 0 and you have both solutions...

  8. toxicsugar22
    • 5 years ago
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    how do i do that

  9. toxicsugar22
    • 5 years ago
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    can u show me

  10. anonymous
    • 5 years ago
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    What values for x can make x^2 = 0 ?

  11. toxicsugar22
    • 5 years ago
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    o

  12. anonymous
    • 5 years ago
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    right, that's one solution

  13. toxicsugar22
    • 5 years ago
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    now how do i do the second equation

  14. anonymous
    • 5 years ago
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    to solve 3 - 1/3x = 0: 3 - 1/3x = 0 add 1/3x to each side 3 - 1/3x + 1/3x = 0 + 1/3x on the left they cancel by subtraction and on the right, the zero is extra: 3 + 0 = 1/3x...

  15. anonymous
    • 5 years ago
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    ...then the zero on the right is extra: 3 = 1/3x Then, since x is being multiplied by 1/3, you do the operation that would "undo" that, which is multiply by 3 (same as divide by 1/3) again on both sides: 3*3 = 3*1/3x 9 = 1x 9 = x Second solution

  16. toxicsugar22
    • 5 years ago
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    ok

  17. toxicsugar22
    • 5 years ago
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    from theat question can u help me with one more

  18. toxicsugar22
    • 5 years ago
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    what values of x make sence for this function

  19. toxicsugar22
    • 5 years ago
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    modulas can u help me

  20. toxicsugar22
    • 5 years ago
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    what values of x make sence for this function

  21. toxicsugar22
    • 5 years ago
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    can u help me

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