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Maths
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How do I calculate the rate of change of something for which I don't have an equation?

This kind of question is an application of differentiation. If t represents time, any derivative with respect to t is a rate of change. For example, if h represents the depth of water in a cubicle con...

SE
Answered by Sam E. Maths tutor
17470 Views

How can we determine stationary points by completing the square?

Suppose we have completed the square on y=ax^2+bx+c and attained y=a(x+p)^2+q, where a,b,c,p,q are real numbers with 'a' not equal to zero and p,q can be...

HY
Answered by Hayk Y. Maths tutor
15360 Views

How do you derive the quadratic formula?

The quadratic formula is the formula that solves any quadratic equation. So, keeping things general, let's begin with a completely general quadratic equation:

ax2+bx+c=0
...

AN
Answered by Aneesh N. Maths tutor
5970 Views

How do I expand a factorised equation?

Firstly put the equation into the the form (x+a)(x+b) this will make things easier later on.

Therefore, an equation such as (x+1)2 would become (x+1)(x+1)

Next expand the br...

EG
Answered by Emily G. Maths tutor
3518 Views

How to derive the formula for a geometric series sum

Any geometric series is defined by an initial term a, and a common ratio b. This means that we start with a and multiply by b to get eac...

ZA
Answered by Zeeshan A. Maths tutor
7713 Views

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