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(a) To differentiate implicitly, differentiate x’s as normal and differentiate y’s with respect to y before multiplying by dy/dx. Therefore the differentiating the curve gives
9x^(1/2) + 10y*(dy/dx) ...

The conditional tense is used to say what might happen under certain conditions. It is called the conditional tense because it is dependent on a certain condition- the event can only take...

When answering a GCSE question that is more than 3 marks, it is helpful to give more than one opinion. There are many different Christian denominations that will have varying perspectives on this. For exa...

Washing hands (vomiting, diarrhoea) Isolation Not sharing utensils or cutlery

Four mark question Can use drawn example to show the comparison of a three chambered heart to that of a four chambered heart.(2)Name the different parts of the heart. Mammalian is two atria, two ventricle...