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f(x) = 2 - cos(3x)integrate function x term2 -> 2x (raise power of x then divide by new power for polynomial functions of x) -cos(3x) -> -(1/3)(sin(3x)) (using a substitution of 3x = u, then cos(u) ...

Remember here that there are two things that examiners like to see: knowledge and skill. Focus your revision separately on these two things and then bring them together to give a great answer.
To rev...

The overall reaction is 2I^-_(aq) +2H₂O_(l) --> I_2(aq) + H_2(g) + 2OH^-_(aq), the anode reaction is 2I^-_...

The gradients of the two lines must be the same. The gradient is m in the equation: y=mx+c For example: L1: y = 3x – 2L2: 3y – 9x + 5 = 0 First rearrange L2 so it is in the same form as L1 to get:3y=9x-5T...

Inflation is when prices increase we can measure it using CPI and PPI data (basket of goods model)