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The chain rule is the technique used for differentiation when the equation you're trying to differentiate contains a function of a function. Consider ln(x). You should know this differentiates to 1/x. If how...

First, the denominator of the fraction is 2, so all the terms on both sides of the = have to be multiplied by 2: 4x - 6 = 1 Then you can simplify this by adding 6 to both sides: 4x = 7 And then divide both s...

2(3a + 5) : First you have to multiply everything inside the bracket by the number outside the bracket: = 2 x 3a + 2 x 5 or = (2 x 3a) + (2 x 5) This can then be simplified to give the answer: (2 x 3a) = 6a ...

Both words are correct and have the same meaning. However, it is more common to use "imprimido" (regular form) in the present perfect tense: "Yo he imprimido los documentos" (I have print...

Advantage: It is a quick and easy way of choosing participants for a study as it is based on convenience. Disadvantage: It may not be representative of the target population, potentially producing a sampling...