\displaystyle F_{Y_1,Y_2}(y_1,y_2) = \left[ -\lambda x_1 e^{-\lambda y_2} - e^{-\lambda x_1} \bigg]_{x_1 = 0}^{y_1} = 1 - e^{-\lambda y_1} - \lambda y_1 e^{-\lambda y_2}
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Did Cambridge maths students find maths and further maths a level very easy?Last reply 2 weeks ago
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Last reply 5 days ago
Did Cambridge maths students find maths and further maths a level very easy?Last reply 2 weeks ago
Edexcel A Level Mathematics Paper 2 unofficial mark scheme correct me if wrong71