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This is a very standard proof question for the C3 exam. The first thing that I would do when I see wordy proof statements like this is to make sure I understand what it means. Maybe writing out the statem...
Rearrange (1): y=2x+4
Subsitute this into (2): 4x2+(2x+4)2+20x=0
Simplify and collect like terms: 8x2+36x+16=0
Factorise: (2x+1)(x+4)=0
Therefo...
S = 14.7, U = 19.6, V =, A = -g, T = t
using s = ut + 1/2 at^2 14.7 = 19.6t + 1/2 -g t^2 1/2 g t^2 - 19.6t + 14.7 = 0
t = (19.6 +- sqrroot(-19.62 - 4 * 0.5 * 9.8 * 14...
(See whiteboard for step by step process) First, we write down the function we want to integrate (3x2), and include the limits at the top and bottom of our integration sign to show that it's a definit...
This differentiation requires use of the chain rule. The first step is to differentiate the whole thing, treating the bracket as u, so u=1+2x2. Therefore we are differentiating u1/2....
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