Top answers


How do I use two-way prepositions?

Prepositions affect the case of the noun after them, and two-way prepositions can either put this noun into the dative or the accusative, depending on if there is movement in the sentence or not. Examples of...
EN
Answered by Ella N. German tutor
3714 Views

How to use the integrating factor?

Say you have a differential equation of the form: dy/dx + Py = Q , where P and Q are functions of x. Remember that even if your equation doesn't initially look like this, you may be able to rearrange it into...
EN
12673 Views

How to integrate cos^2(x) ? ("cos squared x")

We can't integrate cos^2(x) as it is, so we want to change it into another form. We can easily do this using trig identities . 1) Recall the double angle formula: cos(2x) = cos^2(x) - sin^2(x). 2) We also kn...
EN
Answered by Ella N. Maths tutor
858632 Views

What are the different types of immunity?

Firstly, you need to understand that there are two main types: Passive Immunity and Active Immunity. We will take them one by one and break them down now. 1. Passive Immunity: As its name suggests, passive i...
BC
Answered by Bogdan C. Biology tutor
15541 Views

How long have you been studying physics?

I have been interested in physics my whole life, when I was 12 I made my own wind turbine out of a plastic bottle (along with a few other materials!). I took both GCSE and A level physics and just finished m...
NG
Answered by Nathan G. Physics tutor
2793 Views