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If we are given an integral where the integrand (stuff in between the integral symbol and dx) is a product of two separate functions. we then allow whichever of the functions that will be easier to differ...

1. First, decompose the initial velocity (u) into x and y components using trigonometry. These are x= ucos(theta) and y=usin(theta)
2. Note that the x (or horizontal) component does not change bu...

To form the imperfect subjunctive, we take the "ellos/ellas" form of the preterite tense and remove the "-ron" ending. We then add the endings -ra -ras -ra -ramos -rais -ran or -se -se...

This stands for Preceeding Direct Object, and is a grammatical term. Basically, you must always agree a past participle if there is a direct object that comes before it in the sentence. For example, 'il ...

The chain rule is used for functions 'inside' other functions. We have learnt to differentiate functions like x^2, y^20, e^x, -sin(x), and we will use these results in the chain rule. Let's look at an ex...