Top answers

Why do we use the imperfect tense?

Imperfect can be descriptive, refers to a repeated event, or one that continued over a long period of time, or was interrupted by another event. For example: "Je mangeais dans le café quand j'ai vu Phil...
JM
Answered by Jennifer M. • French tutor
2427 Views

What is the subjunctive tense?

The subjunctive tense is a form of the present tense used to express uncertainty or doubt, for example "Es imposible que Maria esté aqui" - "It is impossible that Maria is here".
JM
Answered by Jennifer M. • Spanish tutor
2252 Views

Integrate (x)(e^x) with respect to x and then integrate (x)(e^x) with respect to y.

i) By integration by parts, we see that it equals (x)(e^x)-(e^x)+C, where C denotes the constant of integration. ii) (x)(y)(e^x)+C, where C denotes the constant of integration.
RV
Answered by Rohan V. • Maths tutor
5035 Views

How do you find the possible values of cos(x) from 5cos^2(x) - cos(x) = sin^2(x)?

First, you start by replacing sin^2(x) with 1-cos^2(x) as you want the equation to be in terms of cos(x) and you know sin^2(x)+cos^2(x) = 1. Then you rearrange the equation to get 0 on one side so that you c...
GK
Answered by Gowri K. • Maths tutor
4918 Views

What does Pythagoras's theorem state?

It states that for a right-angle triangle, the square of the hypotenuse equals the sum of the squares of the other sides. So if a denotes the hypotenuse, a^2 = b^2 + c^2.
RV
Answered by Rohan V. • Maths tutor
5244 Views