Concavity Grade 12

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Concavity Grade 12

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Full marks for these videos best math tutor I could find on youtube. Honestly impressed

nicholasraad
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Isn't concave down the sad face part of the parabola?

zumashabalala
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Good day Kevin. Wouldn't the inequality sign change to -8>x because we divided?

hypnos.
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WRONG INEQUALITY SIGN AGAIN KEVIN PLEASE

KgalabiMoabelo