exam
Maths Puzzle
Numerical Ability
(sin2x / 2sinx) = cos^2(x/2) - sin^2(x/2)
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exam Other Question
(a) x+1/2=x+2/3
(b) 2x+3/x=2/3
(c) 3/x=2/1-x
(d) 2-x/3=2x-1/5
(e) 2x-3/4=2/3x
(f) x-1/2=2-x/3
(g) 1-k/3=k+2/2
(h) 2a-3/4=3-a/3
(i) 3/4=t/t+2
(j) 3/4=t/t+2
solve using matrix methods
x + 4y = 8
2x + y = 9
Thank you for your help.