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How do I solve a simultaneous equation?

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...
PC
Answered by Paul C. • Maths tutor
6201 Views

How do I integrate sin^2(x)?

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 ...
CD
Answered by Christopher D. • Maths tutor
6360 Views

Why is the sky blue?

The colour of the sky comes from sunlight scattering off of the air molecules (and to your eyes). Blue light gets scattered more than red light because it has a shorter wavelength, and so the light you see w...
AP
Answered by Alex P. • Physics tutor
9702 Views

How does neurotransmission across a synapse occur?

Neurotransmission, put simply, is how your brain controls your body. It occurs by the passage of action potentials (electrical signals) across a synapse between two or more neurons. Neurons don't touch each ...
KM
Answered by Krish M. • Psychology tutor
6049 Views

If v = 10, a = 2 and t = 4, what is u

v = u+at u=v-at u=10 - (4*2) u=2
NC
Answered by Nicholas C. • Physics tutor
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