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The key point in here is noticing that the derivative of sin(x) is cos(x). That way, if we rename sin(x) as u , i.e u:=sin(x), the derivative will be du=cos(x)dx. So, inside the integral, instead of havin...

Despite the hideous view, we can apply to this function the same methodology as all the other ones: break it down to pieces. What we mean is that we recognize three terms inside f(x): one is the number 1 ...

Porphyritic is commonly applied to igneous rocks and relates to their bi-modal grain size distribution; meaning 2 main grain sizes usually one larger than the other. The occurrence of this is down to the ...

FPTP voting system is a single-member constituency, plurality system used in British Parliamentary elections to elect representatives (MPs) to the House of Commons.It has a number of advantages including:...