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Like in English, there is big difference between written German and spoken German. Umgangssprache means common speech, and if you visit Germany or are going on an exchange and want to sound more ...

In the speaking sections of a French A level exam, I would encourage the student to make sure he or she has understood the content of the text, the main characters, locations and the action described. The...

In solving this, the ideal gas law must be considered (pV=nRT). Since both the pressure and volume of the gas have doubled, the product p*V (pressure times volume) has increased four times from the initia...

Starting from dx/dt = -axt.                                We treat dx and dt as infinitessimal factors of x and t, therefore fundemental mathematical operations still apply. Rearranging the equation to g...

The product rule is useful when you’re dealing with a function comprised of two functions multiplied together. Generally, if you have a function of the form y = f(x)g(x), then the derivative of the functi...