Search over 10,000 free study notes

The imperfect tense is used when describing actions in the past that are not completed whereas the perfect tense describes completed actions in the past.The imperfect tense is also used to describe emotio...

-aba-abas-aba-ábamos-abais-abanExample: -estudiaba-estudiabas-estudiaba-estudiábamos-estudiabais-estudiaban

Osmosis is the net movement of water from an area of high water potential to an area of lower water potential through a partially permeable membrane.An area of high water potential means there is less sol...

A falling object will reach terminal velocity when the force draging it down (ie its weight due to gravity) is equal to the air resistance opposing the motion upwards. When the two forces are equal the ob...

Differentiate U with respect to x to find dx in terms of du and substitute into the integral so that it is in terms of du, then using e^3x = (e^x)^3 and u = 1+e^x subsitute u in for x and simplify the int...