Top answers

In integration, what does the +c mean and why does it disappear if you have limits?

When you differentiate, the constant disappears, because it is not dependent of the variable. So when you integrate, you have to add the constant again. However, you can't know the vaulue of c without being ...
SK
Answered by Susanne K. • Maths tutor
11347 Views

What if my equation doesn't factorise?

For all quadratic equations, you can use the quadratic formula . Given an equation of the form ax 2 +bx+c , you can plug those values into this formula: x 1 , x 2 = (-b +/- sqrt(b 2 - 4ac)) / 2a Note: the te...
HM
Answered by Hayden M. • Maths tutor
5115 Views

How should I use the 'subjonctif'(subjunctive) with the 'verbes d'opinion'?

The 'subjuctif' is used to express willingness, obligation, a suggestion, a feeling, a judgement, a possibility, a doubt.. When we want to express an opinion using verbs such as espérer, croire, dire, affirm...
GT
Answered by Giulia T. • French tutor
4697 Views

How do you use Pythagoras' Theorem?

Pythagoras' Theorem states that h 2 = a 2 + b 2 . This is where you have a right angled triangle, with sides a, b and h where h is the hypotenuse. For example, if we had a triangle with sides of length 3 and...
RB
Answered by Ryan B. • Maths tutor
5575 Views

How do I do a close reading of a poem?

In order to close read a poem, I would recommend reading the poem over a few times, and to start with highlighting anything that stands out to you. This could include alliteration, capitalisation of words, u...
MT
6763 Views