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First and foremost, you must look at the weighting of the marks for the question. You must check markschemes and examiner reports for the specific board to see if the marks for the question are more he...

In a reaction between  MnO₄^- and Fe²⁺ we are told MnO₄^- goes to Mn²⁺ and Fe²⁺ goes to Fe³⁺. We then need to derive t...

We can differentiate this implicitly by writing the question as:y = 2^x Then we take the log of both sides:ln(y) = ln(2^x)Using the rules of logartithms this can be written as:ln(y) = ...

to differentiate this equation we have to do it in two parts because there is a minus sign seperating them in the middle

for the first part we first have to multiple the constant by what ...