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Maths
A Level

Find the integral of a^(x) where a is a constant

Starting with ∫ax dx ,
We can re-write ax using logs as eln(a)*x using some of their properties
We use the substitution u = ln(a)*x (as such du/dx = ln(a)) all...

Answered by Andreas P. Maths tutor
2867 Views

Solve the differential equation dx/dt=-6*x , given when t=0 x=7.

You start by seperating the variables giving,

(1/x)*dx=(-6)*dt

you then integrate both sides with respect to the variables,

ln(x)=-6*t+c

you then subsitute in the given conditi...

Answered by Lucy C. Maths tutor
7651 Views

integrate x^2 + ln(x)

x^3/3  +  1/x

Answered by Beth M. Maths tutor
3095 Views

Statistics: What is the difference between a Binomial and Poisson distribution?

Binomial:

  1. A single trial has only 2 possible outcomes: success or failure

  2. A fixed number of trials, n

  3. Trials are independent

  4. ...
Answered by Shivani S. Maths tutor
8292 Views

Integrate (cosx)^3

In order to integrate (cosx)^3, there is no given rule (by-parts, 'try' method, chain rule) which we can follow. We would need to split it into (cosx)^2 and cosx. Then use the identity: (sinx)^2 + (cosx)^...

Answered by Shivani S. Maths tutor
11164 Views

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