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Are the integers a group under addition? How about multiplication?

There are 4 things we need for a group: associativity, the existence of an identity, inverses in the group and closure. The integers are definitely associative under this operation as addition is associative...
DC
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Quali sono i vantaggi e gli svantaggi del frequentare l'università ?

Personalmente, penso che ci siano molteplici vantaggi legati all'educazione universitaria.Prima di tutto, ottenere un titolo di studio universitario permette di avere maggiori possibilità lavorative , oltre ...
AC
Answered by Arianna C. • Italian tutor
5633 Views

What is the derrivative (dy/dx) of the equation 2 = cos 4x - cos 2y in terms of x and y?

A common C4 question where the student would need to use implicit differentiation to obtain an equation with the derrivative in it. 0 = -4sin4x + 2(dy/dx)sin2y. Then all that is required is rearranging the e...
AY
Answered by Arsh Y. • Maths tutor
3722 Views

Two types of long-term memory are procedural memory and episodic memory. Explain two differences between procedural memory and episodic memory. (4 marks)

Procedural memory is part of the long-term memory which is responsible for knowing how to do things i.e. memories of motor skills (for example, riding a bike). Episodic memory, on the other hand, is responsi...
MM
Answered by Mila M. • Psychology tutor
7756 Views

'Critically asses the claim that knowledge of God can be known through reason alone'.

The claim that knowledge of God can be known through reason alone is highly flawed. This is due to the fact that our reason, or a priori knowledge, cannot be empirically verified. Therefore, by only acceptin...
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