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Recall Pythagoras' theorem. a^2 + b^2 = c^2. Think about this as a triangle, with a and b being the lengths of the 2 perpendicular sides, and c being the length of the hypotenuse. [Drawing on a whiteboard...

The +c is to represent the loss in information after differentiation. Remember, integration is just the reverse of differentiation. Say we had this function:

f(x) = 2x^2 + 1 And we differentiate: f...

When expressing a negated opinion, you need to use the subjunctive. So it should be 'no creo que sea asi'. This applies to many other opinion verbs, like pensar. Remember: Pienso/creo que... use the indic...

When we have numbers that are smaller than 1 we use the coma to help us multiplie by 1000. As there are 3 zeros in 1000, we will move the coma on 0.032 3 times to the right to make it bigger. So once woul...

The general rule of thumb with Italian is that possessive adjectives use a definite article alongside them (e.g. il mio libro, la sua macchina). The only exception to this rule is with family members, whe...