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Maths
A Level

With log base 4, solve log(2x+3) + log(2x+15) = 1 + log(14x+5)

How might one simplify this? It looks as though raising both sides to the power 4 is the way to go, but it is not immediately obvious how to do this. In order to get both sides into the form 'log of somet...

SJ
Answered by Sam J. Maths tutor
3772 Views

What are the main factors when deciding whether or not the Poisson distribution is a suitable model?

The events must occur:

randomly; singly in space or time; independely of each other and at a constant rate

RA
Answered by Rizwana A. Maths tutor
3626 Views

Explain how Differentiation by the chain rule works

If the expression to be differentiated is a (differentiable) function of another (differentiable) function, then the chain rule must be applied. For example y= f(g(x)), where f and g are both differentiab...

GO
Answered by Gwyndaf O. Maths tutor
3803 Views

Factorise completely ( x − 4x^3)

(x-4x3) = x(1-4x2)  Just taking a factor of x out of both terms Within the inner bracket we have a difference of two squares. 12=1 and (2x)2=4x2 ther...

EC
Answered by Edward C. Maths tutor
21301 Views

solve the differential equation dy/dx = 6xy^2 given that y = 1 when x = 2

First step is to seperate the variables (EQ1) : (1/y^2) dy = 6x   Then we integrate each side seperately giving us (EQ2) : -1/y = 3x^2 + C (remembering to add 1 to the power and divide by the new power) s...

DM
Answered by Dylan M. Maths tutor
9619 Views

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