Top answers


What is supernormal profit?

When a firm is making a supernormal profit, this refers to a profit level at which new firms are willing to enter the market. This suggests that the firms currently in the market are making a profit level ab...
CB
Answered by Chris B. • Economics tutor
13209 Views

How can I research for my EPQ

This is a tricky question as there are so many ways to research. Firstly, you should decide specifically on what you specifically want to write about and research. Once you have that, googlescholar is an exc...

How would I answer this question? Use factor theorem to show (x-2) is a factor of f(x) = 2x^3 -7x^2 +4x +4.

The first step is to find out the value of x for which your bracket/value you think is a factor equals 0. So, x – 2 = 0, therefore x = 2. Now plug in this value into your original equation and if the result ...
MS
Answered by Maria S. • Maths tutor
5726 Views

Find the exact value of x from the equation 3^x * e^4x = e^7

To begin to solve this equation we must take natural logarithms of both sides of the equation. This gives: ln(3^x*e^4x) = lne^7 Then we can use the log rules on the left hand side to expand it slightly to: l...
CB
Answered by Chris B. • Maths tutor
15883 Views

How to calculate the inverse of a 2x2 matrix

Suppose we have a matrix M = [{a b} {c d}] The inverse of a matrix M is any matrix, that when multiplied by M, gives the unit matrix (I) - in this case: [{1 0} {0 1}] First, we have to determine if the matri...
AR
Answered by Alex R. • Maths tutor
12561 Views