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Assess the importance of a chosen marine ecosystem (15)

Coral reefs: diverse/fragile ecosystem, found in coastal areas/tropics/warm waters 23-29degrees C, (temp needed to sustain growth) valuable goods and services, threatened by global warming, rising SST. 1) Bi...
MB
Answered by Maria B. Geography tutor
2558 Views

Why is the derivative of x^n, nx^(n-1)?

From the definition of a derivative: f'(x) = lim h->0 ((f(x+h) - f(x)) / h) Let f(x) = x^n --> d\dx x^n = lim h->0 (((x+h)^n - x^n) / h) By binomial expansion, (x+h)^n = x^n + nhx^(n-1) + n(n-1)h^2 ...
JF
Answered by Joshua F. Maths tutor
5261 Views

¿Cuál es la diferencia entre cuando y cuándo?

" Cuando " sin tilde se utiliza siempre que se quiere expresar una condición en el futuro. Ejemplo: Iré a la casa de mi amigo cuando tenga tiempo. En este caso, ir a la casa de su amigo depende del...
KH
Answered by Karl H. Spanish tutor
43199 Views

Show that 12coshx - 4sinhx = 4e^x + 8e^-x

Using the definitions of coshx and sinhx (coshx=1/2(e^x+e^-x) and sinhx=1/2(e^x-e^-x)), we can substitute these into what we want to show, giving 12(1/2(e^x+e^-x)) - 4(1/2(e^x-e^x)), expanding this out gives...
EW
Answered by Emily W. Maths tutor
3892 Views

'Women in Jane Austen's novel 'Emma' are consistently undermined by their male superiors.' Discuss.

First, in the introduction, I would suggest that you would have to define the key terms. So for example, which female characters are you going to discuss? You cannot discuss them all to great detail, so pick...
AP
Answered by Alice P. English tutor
2803 Views