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Both are translated as 'to be', but ser is generally used for permanent qualities, whereas estar is normally used for temporary conditions or states- this is ideal to use as a general rule of thumb. Howev...

Auxin is a growth hormone in that is found in plants. When it is released, it causes the affected cells to elongate. Auxin is released along the shaded side of the plant, at the shoot tip. This causes the...

Crude oil is separated by fractional distillation. The mixture of components is put in the distillation tube and heated. The different liquids start to evaporate and move up the fraction Column. The compo...

There are multiple approaches we can take to this: we could for instance use iteration in a loop or even use a recursive function. But since we want an arbitrary input n we probably should make sure that ...

We start by trying to find out the values of a and c using the information about the minimum point. We know we can rearrange the right hand side by completing the square: y = a(x^2 + 3x)+cy = a(x+3/2a)^2+...