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Using LATEX (Logarithms, Algebra, Trigonometry, Exponential and Complex numbers) to determine which variable is du and which is dv/dx. This is decided by using the above acronym. For example in this question...

The Ontological argument attempts to prove the existence of God deductively. Anselm is seen as having put forward this argument in its original form, paraphrased as the following syllogism: 1. The existence ...

We know that tan x =sin x/cos x, so we can multiply the whole equation by cos x which gives us => 2cos^2 x =3 sin x from the trig identity sin^2 (x)+ cos^2 (x)=1, we can sub in cos^2 (x)=1-sin^2(x) => ...

23/7 = (21+2)/7 = (3*7+2)/7 = 3 2/7

Test factors of -3 to find a root for the equation. For example, try 1, 1^3+3*1^2-1-3=0, so 1 is a root, and (x-1) is a factor. Now it's known that: (ax^2+bx+c)(x-1)=x^3+3x^2-x-3. By comparing coefficients f...