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CT
Answered by Charlotte T. • Maths tutor
3420 Views

How should I know when to use "tu" or "usted"

Usted is a more formal and respectful term to use when talking to a new acquaintance, an older person or someone who you wish to show respect to due to their higher rank e.g an authority figure. It's plural ...
LF
Answered by Lauren F. • Spanish tutor
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Cellular structure of the brain

The cellular structure of the brain is a relatively recent discovery and it's Santiago Ramòn y Cajal that recognised it; in addition to this he recognised the neuron as the basic unit. Three main elements ca...
SD
Answered by Sara D. • Biology tutor
3028 Views

Given y = 2x(x^2 – 1)^5, show that dy/dx = g(x)(x^2 – 1)^4 where g(x) is a function to be determined.

y=2x(x 2 -1) 5 dy/dx= 2(x 2 -1) 5 + 2x*10x(x 2 -1) 4 dy/dx=(x 2 -1) 4 (2x 2 -2+20x 2 )dy/dx=(x 2 -1) 4 (22x 2 -2)
KS
Answered by Katie S. • Maths tutor
9216 Views

What is the core periphery model?

The core-periphery model is one used to describe the globalised world. A country with many international political, economic and social interactions is considered core. E.g UK. Whilst a country with limited ...
SW
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