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Math Help - Real Zeros of the function

  1. #1
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    Real Zeros of the function

    Hey, this is summer work and i forgot all about these. the equation is:

    f(x)=x^3-(11/3)x^2+(5/3)x+1

    I have to find all the real zeros. So far ive multiplied by 3 to make it

    f(x)=3x^3-11x^2+5x+1

    Am I right? How do i finish this? thanks guys
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by bluehicke35 View Post
    Hey, this is summer work and i forgot all about these. the equation is:

    f(x)=x^3-(11/3)x^2+(5/3)x+1

    I have to find all the real zeros. So far ive multiplied by 3 to make it

    f(x)=3x^3-11x^2+5x+1

    Am I right? How do i finish this? thanks guys
    the +1 at the end should be +3

    i don't want to re-invent the wheel. a lot of problems of this type have been done here. i may post some links to the problems in this post later. until then, see a nice tutorial here
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  3. #3
    is up to his old tricks again! Jhevon's Avatar
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    Here are some posts from the forum that tackle problems like these. some have very detailed explanations. so if you don't get it from one, look at the others. if you are still lost, you can ask questions. but only after you have gone through all the threads and tried to grasp the concept. that's the best way to go

    http://www.mathhelpforum.com/math-he...equations.html

    http://www.mathhelpforum.com/math-he...nal-zeros.html

    http://www.mathhelpforum.com/math-he...help-asap.html

    http://www.mathhelpforum.com/math-he...olynomial.html

    http://www.mathhelpforum.com/math-he...factoring.html

    also, googling "factoring cubics" or "factoring cubic equations" may help
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