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so step 1) remove the denominator by multiplying (4-a) by p. Therefore obtaining p(4-a) = 3a+5. step 2) multiply out to get 4p-ap = 3a+5 step 3) have all the a's on one side, and non a's on other side. th...

Key to Auden's perspective on suffering is that suffering is a constant component of human existence, made clear in Surgical Ward, where he observes how those who experience acute pain magnify th...

Use the product rule: Let   u = cos3x ,     v = cosec4x Then du/dx = -3sin3x , dv/dx = -4cosec4xcot4x  (standard result, given in the formula booklet) Hence dy/dx = -4cosec4xcot4xcos3x - 3sin3xcosec4x . (...

Internal energy, temperature, and heat are closely related but distinct concepts. The microscopic particles that make up a body are in constant motion and may exert forces on ea...

Chinese characters appear to have little correlation at the start and because there are so many of them, they are hard to get your head round. Repetition is key to learning characters. it seems obvious, b...