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You will be presented with two equations, both with two unknown values. For example: 8x-2y=19 and 3x=5+y To begin, we are going to move both unknown terms in the second equation to the same side: 3x-y=5 Then...

First, remember the compound angle formula for cosine: cos (2x) =cos^ 2 (x)-sin^ 2 (x). Now use the identity sin^ 2 (x)+cos^ 2 (x)= 1 to give : cos (2x) =(1-sin^ 2 (x))-sin^ 2 (x)=1 -2sin^ 2 (x) Rearranging ...

=3x(3+y+3zy)

There are two types of fraction integrals you might come across. Fractions where the denominator is factorisable and fractions where it is not. So first try and factorise the denominator. Type 1 Factorisable...

p { margin-bottom: 0.25cm; line-height: 120%; } Recall that a geometric progression is a sequence (a_n) defined as follows a_1 = a a_n = a * r^(n - 1) for all integers n > 1 where a and r are some fixed n...