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anonymous

  • 5 years ago

How should I sketch the two functions in 1A-1 in Problem Set 1?

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  1. anonymous
    • 5 years ago
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    \[y=x ^{2}-2x-1 \]

  2. anonymous
    • 5 years ago
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    \[y=3x^2+6x+2\]

  3. anonymous
    • 5 years ago
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    I'm not sure but i don't think there is much to sketching parabolas. Set y=0 to get the x-intercepts. Quadratic formula or factoring. You can find the one critical point which, knowing the graph of a concave up parabola, is the global minimum. (You can also complete the square to get the parabola into vertex form) I was taught that with 3 points you can graph a parabola and what better three points than the most important.

  4. anonymous
    • 5 years ago
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    Okay, thanks!

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