Search over 10,000 free study notes

On the 19^th of February 1861 Tsar Alexander II signed into law the statues abolishing serfdom in the Russian Empire. This directly affected 22,557,748 peasant men, women and children, and aroun...

'Si' means 'if' in French. Like in English, it is used to talk about things that could happen. This is a 'si' clause in English: 'If I was rich, I would buy loads of book...

These are simultaneous equations and we need to find the value of X and Y. We can use the elimination method. The coefficients (the amount the letter is being multiplied by) of X and Y do not match. First...

To find an extreme point of a function you must first take the derivative of f(x) with respect to x.
As the function will peak/trough at the extreme point, the gradient at this point will be equal to...

(a)To find the turning points of a curve, need to solve dy/dx=0. Using the quotient rule one can differentiate y:y=f(x)/g(x) dy/dx=(f'(x)g(x)-f(x)g'(x))/(g(x))²f(x)=3x, f'(x)=3, g(x)=(9+x^2...