Top answers

State the nth term of the following sequence: 3,7,11,15,19...

nth term= 4n-1
JJ
Answered by Jaredd J. • Maths tutor
7492 Views

Describe homoeostasis using temperature control as an example.

Homeostasis is the maintenance of a constant internal environment. The body tends to use a series of negative feedback loops to allow this. Using temperature as an example, the body likes to maintain a core ...
PS
Answered by Priya S. • Biology tutor
4129 Views

How do I structure a paragraph for an exam essay?

The ability to structure paragraphs is a quality that many students worry they do not possess. Fortunately, this is an easy and effective skill to master: once you crack the formula, your essays will appear ...
FD
9878 Views

How do I construct a proof by induction?

There are typically 4 steps: proving the base case, making an assumption, making the inductive step and finally concluding the proof. The base case consists of proving that a statement is true for n = 1, the...
AF
3915 Views

Using the definitions of hyperbolic functions in terms of exponentials show that sech^2(x) = 1-tanh^2(x)

tanh(x) = ((e x -e -x )/2)/((e x +e -x )/2) 1 - tanh 2 (x) = 1-((e x -e -x )/(e x +e -x )) 2 = ((e 2x +e -2x +2)-(e 2x +e -2x -2))/(e x +e -x ) 2 = (2e x .2e -x )/(e x +e -x ) 2 = 4/(e x +e -x ) 2 = sech 2 x
CB
8797 Views