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Uniform means that the centre of mass is half way up the ladder. Smooth wall means no friction is felt on the wall and rough ground means that there is friction felt there. First, draw a diagram and take ...
((3x+4)^3)/9 +C
Two lines are parallel if they have the same gradient. The general equation for a straight line is y=mx+c, where m is the gradient and c is the y-intercept. If these lines are parallel, then m will be the...
d^2y/dx^2 = 48x^2 - 18x -12
7^9
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