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First you need to find the vector AB. This is equal to -OA+OB.
OA and OB are equal to the position vectors of A and B respectively so
-OA+OB= -2i - 6j + k + 3i + 4j + k = ...
This type of equation involves a modulus, this the component enclosed in the straight lines, |2x+1|. A modulus takes the absolute value of its contents, this means that regardless of the input...
The most important thing to remember about rearranging equations is that what you do to one side, you have to do to the other side as well to balance it. In the question above, to get rid of the 2 on t...
As the expression contains 4 separate terms that are added together, we can treat this as 4 separate differentiations. The general rule for differentiation for a general term bx^n is (bn)x(n-1...
y = 6x2 + 8x + 2
To find the first derivative of this equation, we must multiply the powers of x with the coefficient. Therefore, we do 2 times 6 (2 is the power and 6 is the ...
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