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Find ∫(x^3+x^2+6)dx.

∫(x 3 +x 2 +6)dx= ∫x 3 dx +∫x 2 dx+∫6dx =x 4 /4 +x 3 /3 +6x+C.
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Answered by Georgiana I. • Maths tutor
6614 Views

What is the key to writing Spanish essays?

From my experience, Spanish writing at both GCSE and at A-Level depends greatly on the quality of your essay. It is divided up into 4 marking sections. Content of the essay (/25) Range of vocabulary/phrases ...
JS
Answered by Jordan S. • Spanish tutor
3107 Views

Identify three types of long-term memory and give an example of each type

Long-term memory is one of the two storage types of memory. Long-term memories are memories that we are able to keep over a timescale of a couple of minutes to a whole lifetime. There are two types of long-t...
BW
16679 Views

Using the trigonometric identity (sinx)^2 + (cosx)^2 = 1, show that (secx)^2 = (tanx)^2 + 1 is also a trigonometric identity.

We can divide by (cosx)^2 across the identity (sinx)^2 + (cosx)^2 = 1 (which can be derived from properties of the unit circle and a bit of Pythagoras’ theorem) to achieve [(sinx)^2 / (cosx)^2] + [(cosx)^2 /...
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Answered by Annie B. • Maths tutor
4318 Views

The random variable J has a Poisson distribution with mean 4. Find P(J>2)

P(J>2) = P(J=0)+P(J=1) [split it up] P(X=t)= (V^t)/t!*e^V where V=4 in this case [use the formula] P(J>2) = 4^0/0!*e^4 + 4^1/1!*e^4 =1/e^4 + 4/e^4 = 5e^-4 which is roughly 0.0916
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Answered by Nathan C. • Maths tutor
4754 Views