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What is de Moivre's theorem?

de Moivre worked out a brilliant and beautiful way to solve complex equations.

If you for example have z3= 1 and you want to find all real and complex z that satisfy thi...

FD
1845 Views

How is the French subjunctive mood constructed?

The subjunctive mood is used in French to express several different things, such as uncertainty, hope or fear. Firstly we will look at how it is constructed: For regular verbs, we take the third person pl...

AJ
Answered by Alice J. French tutor
1966 Views

solve for x: (x-2)(x+3)=2(2x+11)

expand the brackets to get x2-2x+3x-6=4x+22 bring all the terms to one side x2-2x+3x-6-4x-22=0 (remember:if you do something to one side, do the same thing to the other! e.g. -4x on ...

JR
Answered by Jack R. Maths tutor
5167 Views

How would you define the concept of Parliamentary Sovereignty?

The most common explanation of the idea of sovereignty comes from Dicey, who saw sovereignty as the idea that Parliament can make or unmake any law it chooses, with unlimited discretion. This means that f...

IC
Answered by Iona C. Politics tutor
2012 Views

A curve is defined by the parametric equations x=t^2/2 +1 and y=4/t -1. Find the gradient of the curve at t=2 and an equation for the curve in terms of just x and y.

To find the gradient of the curve at t=2 we need to find an expression for dy/dx and then substitute in for t=2. We can make use of the chain rule to find this expression because dy/dx = (dy/dt)/(dx/dt) a...

SC
Answered by Steven C. Maths tutor
8441 Views

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