Top answers

How do I write a good introduction to an essay?

The introduction to your English essay is all about opening up, clearing up and getting your readers prepared for the nature of your answer. In other words, the introduction should warm your reader up to the...
MF
6068 Views

How do you differentiate y = 5 x^3 + 1/2 x^2 + 3x -4

FIrslty to avoid confusion: x = the variable x X = multiplication. When you differentiate an equation, the derivative (answer) is referred to as dy/dx. For a polynomial as in this question you take each term...
EM
Answered by Emma M. • Maths tutor
10021 Views

When using the addition rule in probability, why must we subtract the "intersection" to find the "union" with the Addition Rule?

There is a subtle point to be made here, which comes down to double counting. The addition rule:Pr(A union B) = Pr(A)+Pr(B)-Pr(A intersection B)allows us to work out the probability that either event A or ev...
LG
Answered by Lewis G. • Maths tutor
29906 Views

How do I find the minimum or maximum of a quadratic function?

Take a general function f(x) = ax²+bx+c First thing to do with every problem is sit back and think a bit: there are usually several ways to solve a problem but one will likely be easier and shorter. In this ...
MV
Answered by Max V. • Maths tutor
6417 Views

What is the difference between a structured interview and an unstructured interview, and what are the advantages and disadvantages of each?

Structured interviews are used in psychology when carrying out interviews where the questions are predetermined and in a certain order. The order and structure never changes for any participant.The advantage...
SH
15914 Views