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Both 'ser' and 'estar' both translate into English to mean 'to be'. However, this does not mean that they are interchangeable and it is essential that you learn the different uses of each verb. In order t...

Blood enters the heart from the body through a large vein called the Vena Cava. This blood flows freely into the right side of the heart into the right Atrium. From here the blood will pass through the Tr...

The largest speed is obtained at the position of equilibrium.

v=Aw

So v= 2 x 1

     v=2ms^-1

The Spanish subjunctive is a mood and not a tense. 

It is used in many different occasions:

1. When the subject of the clause changes e.g. I want her to go to the shop

2. ...

Consider the function as 1(ln(x)) and then use integrating by parts, where you would differentiate the ln(x) part.