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Consider a differential equation where dx/dt = -axt. Find an equation for x(t).

Starting from dx/dt = -axt. We treat dx and dt as infinitessimal factors of x and t, therefore fundemental mathematical operations still apply. Rearranging the equation to group x, dx and t, dt. 1/x dx = -at...
CL
Answered by Cal L. • Maths tutor
5128 Views

How do you expand brackets? eg. (2x+3)(3x+4)

Use the FOIL method for: (2x+3)(3x+4) F irst e.g. multiply first two numbers (2x and 3x) O utside e.g. 2x and 4 I nside e.g. 3 and 3x L ast e.g. 3 and 4
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Answered by Naba C. • Maths tutor
6108 Views

How do you differentiate a function comprised of two functions multiplied together?

The product rule is useful when you’re dealing with a function comprised of two functions multiplied together. Generally, if you have a function of the form y = f(x)g(x), then the derivative of the function ...
EG
Answered by Elliot G. • Maths tutor
9949 Views

I just wanted to expand on what sort of information I can be of help with

I am a 3rd year medical student at Imperial College London. While applying, I did the UKCAT, BMAT, MMI and a panal interview. So I think its fair to say that I've done it all ;). I can be of help in all aspe...
AM
2099 Views

Solve this simultaneous equation: 5x+6y=3 and 2x-3y=12.

Firstly, I will provide a mark scheme and then a full explanation underneath. 5x+6y=3. (1) 2x-3y=12. (2). (5x+6y=3)+(2(2x-3y=12)). (5x+6y=12)+ (4x-6y=24). 9x=27. x=3. Put x is (1) 5(3)+6y=3=15+6y=3. 6y=-12. ...
AM
Answered by Ashni M. • Maths tutor
12895 Views