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Upper bound of Peter's height = 185cmLower bound of Peter's height = 175cmUpper bound of Alice's height = 155cmLower bound of Alice's height = 145cmFor the upper bound of the difference, we want the upper...

de Moivre's theorem gives us that (cos(x) + i sin(x))ⁿ = cos(nx) + i sin(nx), for integers n and real values x.Therefore cos(5x) + i sin(5x) = (cos(x) + i sin(x))⁵ = cos⁵(...

There are many different options for learning your set-texts. You need to learn them inside out and at the same time you want to do this as quickly as possible so it is vital to have the right approach. H...

In Latin, tenses are divided into two sets, or sequences: primary and historic. The main primary tenses are the future (I will verb), the present (I am verbing) and the continuous perfec...

Diffusion is the passive process by which molecules move across a semi permeable membrane down their concentration gradient from an area of high concentration to low concentration. An example is gaseous e...