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This is a quadratic equation and there are three ways to solve one. This question specifies that the answer should be left to three decimal places. This tells you that you can not factorise, as your...

a,y=5xfinding the inverse: x=5y - dividing by 5 (1/5)x=y f^-1(x)=(1/5)x
b,5x(7²+1)=250

We'll apply the quotient rule using "u = ln(x² + 1)" and "v = x² + 1". First we'll need to calculate u' and v'.Using normal differentiation rules, we can see &quo...

I come from Leipzig, a city in the east of Germany. Before I was born, Germany was divided - the Federal Republic of Germany and the German Democratic Republic. There were two different political systems ...

(i) 5 peaks (ii) 3 peaks(iii) 4 peaks