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What is the difference between '<' and '≤'?

'x &lt; 4' simply means that x is less than 4.2) However, x ≤ 4 means that it is less than or equal to 4. So if you have x = 3, 2, 1, 0 then the first term, 'x &lt; 4' appliesbut if x = 4, 3, 2, 1, 0 then th...
TH
Answered by Tom H. • Maths tutor
5503 Views

As a director influenced by Brecht, what styles and conventions would you implement in your piece of theatre?

With Brecht being an abstract and absurd practitioner, I would keep in mind that his main philosophy was to use theatre not to entertain but to educate, and to always remind the audience that they are watchi...
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Answered by Jannat S. • Drama tutor
2347 Views

A kettle requires 2400 Coulombs of charge to pass through its heating element, with a resistance of 6 Ohms, in a time of 200 seconds in order to boil the water inside it. Calculate the current flowing and the power of the kettle.

I=Q/t=2400/200=12AP=I V=I^2 R=12^2*6=864W Of course, when discussing the answer with a student I would verbally explain each step in detail and add more drawings to my workings. Unfortunately, I cannot do th...
SL
Answered by Sam L. • Physics tutor
7104 Views

Find the equation of the normal of the curve xy-x^2+xlog(y)=4 at the point (2,1) in the form ax+by+c=0

differentiating: xy'+y-2x+(x/y)y'+log(y)=0rearranging: y'=y(2x-y-log(y))/x(1+y)at (2,1): y'=3/4 so gradient of normal at (2,1) is -4/3so the equation of the normal is y-1=(-4/3)(x-2)which is equivalent to 4x...
SL
Answered by Sam L. • Maths tutor
3493 Views

Solve the simultaneous equations y = x^2 +3x and y = x+8

Because both of the equations are equal to y, the first thing we do is make them equal to each other:x^2 + 3x= x + 8We then want to rearrange the equation so that everything is on the same side of the equals...
JW
Answered by Jessica W. • Maths tutor
4490 Views