Alternative method of BPT
If ˆ ˆ ˆ ˆ ˆ ˆ p i j k and q i – 2j k , find a vector of magnitude 5 3 units perpendicular to the vector q and coplanar with vectors p and q .
if a quadratic polynomial y=ax^2+bx+c intersects x axis at alpha and beta
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