For a cubic function \( y=f(x), f^{\prime \prime}(x)=4 x \) at each... VIDEO
For a cubic function \( y=f(x), f^{\prime \prime}(x)=4 x \) at each point \( (x, y) \) on it and it crosses the \( x \)-axis at \( (-2,0) \) at an anglehttps://bit.ly/YTAI_PWAP https://www.pw.live
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