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Endothermic reactions take in heat from the surroundings, whereas exothermic reactions release heat to the surroundings. Exothermic reactions release heat as the energy released from the bonds being made ...

Emma Smith states that Doubling is not just a 'practical necessity, but a representational technique that could also make connections and contrasts between distinct characters or worlds'. She explains it ...

(sinx - tanx)(cosx - cotx)= (sinx - sinx/cosx)(cosx - cosx/sinx)= sinxcosx - (sinx + cosx) + 1= (sinx - 1)(cosx - 1)

sub y=kx-1 into circle equation, get (k^2+1)x^2-(8k+4)x+18=0for 2 distinct solutions need b^2-4ac>0, ie -8k^2+64k-56>0iff k^2-8k+7<0complete the square: intersections of equation in k satisfy(k-4...

Ted Hughes' Thrushes delineates the natural world as a a brutal realm of savagery and survival. An analysis of Hughes' careful use of phonological patterning, selection of lexical items and symbo...