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Explain the difference between a receptor and an effector using examples.

Receptors have the abilty to detect a stimuli which include changes in surroundings such as pressure on the skin. This stimuli is then converted into an impulse. Examples of receptors include the retina in t...
MS
Answered by Mohini S. • Biology tutor
21695 Views

Express asin(x) + bcos(x) in the form Rsin(x+c), where c is a non-zero constant.

The trick to solving this is to use the trig identity sin(a+b) = sin(a)cos(b) + sin(b)cos(a) From the identity above, we can write rewrite Rsin(x+c) as follows: Rsin(x+c) = R[sin(x)cos(c) + sin(c)cos(x)] Exp...
LH
Answered by Louis H. • Maths tutor
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Integral of a compound equation (or otherwise finding the area under a graph): f(x) = 10x*(x^(0.5) - 2)

This can be done 'by parts' or by expanding. In this case it would be easier to expand as it is possible to deal with terms individually here. This becomes: 10x x 1/2 - 10x 2 = 10x 3/2 - 20x We know this bec...
RD
Answered by Roden D. • Maths tutor
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By forming and solving a quadratic equation, solve the equation 5*cosec(x) + cosec^2(x) = 2 - cot^2(x) in the interval 0<x<2*pi, giving the values of x in radians to three significant figures.

To solve the equation given in the question, we must first express the given equation in terms of only one trigonometric function, i.e. either all in cosec or all in cot. The easiest route would be cosec, si...
NM
Answered by Nadia M. • Maths tutor
9682 Views

I've just heard about objects. How do I use them and do they work with Arrays?

JavaScript objects are collections of data with key-value pairs. A 'key' is a label for a bit of data. In the example below; name, age and hobbies are all keys. A 'value' is the bit of data you want to store...
SM
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