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anonymous

  • 5 years ago

how do u solve a problem that looks like this: y=cubic root of sin sqx

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  1. amistre64
    • 5 years ago
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    you could start by writing it out in a usable manner :) ....

  2. anonymous
    • 5 years ago
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    it is written in a usable manner, im just confused because professor didnt give us any instruction in what to do

  3. amistre64
    • 5 years ago
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    what does this mean: sin sqx?

  4. anonymous
    • 5 years ago
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    sin^2 X, sorry :D

  5. amistre64
    • 5 years ago
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    aha!! now it looks like something I can use :)

  6. amistre64
    • 5 years ago
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    y = cbrt(sin^2(x)) The "solution" will be all legal "x" values that make the statement true. It most likely is the graph of the equation.

  7. amistre64
    • 5 years ago
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    The "Domain" is whay we use apply a value to "x"; and as long as we only use what is allowed by the Domain, the equation pops out a solution.

  8. amistre64
    • 5 years ago
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    whay=what...... my keyboard hates me..

  9. anonymous
    • 5 years ago
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    thank you, i think i have to use the chain or power rule somehow, but i have problems solving it, bacuase of the sin^2x

  10. amistre64
    • 5 years ago
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    chain rule is good f(g(h(x))) right? f(x) = cbrt(x); g(x) = x^2; h(x) = sin(x)...

  11. anonymous
    • 5 years ago
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    yeah, the problem is i dont know how to get the derivative of cbrt sin^2x.

  12. amistre64
    • 5 years ago
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    sin^2(x) can be a clumsy notation; it is just a way of writing (sin(x))^2

  13. amistre64
    • 5 years ago
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    derivative eh..you trying to derive this equation? that would have been helpful to know :)

  14. anonymous
    • 5 years ago
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    awww sorry, i just found out i had to to that.

  15. amistre64
    • 5 years ago
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    rework the equation into exponents; cbrt = ^(1/3) and sqrt = ^(1/2) when exponents have exponents; they multiply together..

  16. amistre64
    • 5 years ago
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    sin^2^(1/2)^(1/3) = sin^(1/3); think of this as x^(1/3) and derive

  17. amistre64
    • 5 years ago
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    I get: (1/3)cos(x) ^(-2/3): which can be cleaned up some

  18. amistre64
    • 5 years ago
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    1 ------------- 3 cbrt(cos^2(x)) Whatcha think about that?

  19. anonymous
    • 5 years ago
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    my friend got almost the answer, thank you so much!!!!

  20. amistre64
    • 5 years ago
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    almost the answer? I wonder what an "almost the answer" looks like :)

  21. anonymous
    • 5 years ago
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    he got a 2 instead of 1.. but we are all confused so i'll go with ur answer, thank you

  22. amistre64
    • 5 years ago
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    check my work, by all means, after all..im an idiot in disguise :) yw!

  23. anonymous
    • 5 years ago
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    lolz, yeah im copying what you tyoed and i'm going to check it .. thank you tho

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