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In complex number ( especially for any real number) x and integer n it holds that (cos(x) + i(sinx))^n = cos(n x) + isin(n x) where i is the imaginary unit representing as i*i = -1. This is called De Moivre'...

(Equation 1) 5x + 2y = 20 (Equation 2) x + 4y= 13 As we know the values for x and y are the same in both equations, we can use them to find out the values for both, In order to do this we need to take one eq...

Mitosis occurs in a continuous, sequential order and has 5 stages: 1) Prophase 2) Metaphase 3) Anaphase 4) Telophase. Interphase Interphase occurs before Mitosis and is the process where the cell is preparin...

Leaching from the excessive use of fertilisers causes a nutrient build up in neighbouring rivers or lakes. As a result of the increased nutrients plants within the lake or river grow rapidly, including algae...

The main parts of the digestive system are the... - mouth - oesophagus - stomach - liver - gall bladder - pancreas - small intestine - large intestine There are three main enzymes involved in digestion: Amyl...