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A curve is defined by the parametric equations: X = 3 – 4t , y = 1 + (2/t) Find (dy/dx) in terms of t.

When dividing fractions by fractions with a common factor: (a/c) / (b/c) = (a/c) * (c/b) = (ac/bc) we can cancel the common factor to get (a/b). So in this question we can do the same: (dy/dt) / (dx/dt) = (d...
EE
Answered by Eddie E. • Maths tutor
6266 Views

What is the photoelectric effect?

The photoelectric effect refers to the emmision of electrons from a surface, usually a metal, as a result of shining light (EM radiation). The light is absorbed by the electrons on the surface and thus the e...
MC
Answered by Michalis C. • Physics tutor
2654 Views

How is the conditional formed in German?

To form the conditional in German, the Subjunctive 2 (Konjunktiv 2) is used. The Subjunctive 2 is a mood used to express doubt or uncertainty, which is why it is used for the conditional; we are not stating ...
EG
Answered by Emma G. • German tutor
6035 Views

How would you work out the price of a trip if it is usually £24 but a man has a railcard that gives him 30% off?

In order to work out 30% off something you can use two methods. I'll explain both. Method one: Work out 30% of the total price. This would be the same as working out 10% (dividing by 10 = £2.40) and multiply...
CT
Answered by Chloe T. • Maths tutor
3661 Views

How do I show (2n)! >= 2^n((n!)^2) for every n>=0 by induction?

First we need to be clear how to construct a proof by induction. It has two main parts, the base case and the inductive step . Let P(n) denote that the statement is true for a fixed n. Our base case is to ch...
CF
Answered by Connor F. • Maths tutor
8631 Views