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Find the stationary points of the function f(x) = x^3 - 27x and determine whether they are maxima or minima

A stationary point occurs when the first derivative of the function = 0. The first derivative of f(x) is df(x)/dx = 3x^2 - 27Setting this to zero gives 3x^2 - 27 = 0 -> x = +/- 3
To find whether i...

Answered by Iman S. • Maths tutor

5128 Views

Different cultural questions students usually are interested in knowing about

"¿Para ti, cuáles son las diferencias entre la cultura española y la cultura británica?"Para mí, hay muchas, sobre todo, una visión diferente de las relaciones sociales. L...

Answered by Rosa S. • Spanish tutor

1804 Views

what is d(2x^3)/dx?

the differential of a function y=2x^3 is the rate of change of that function. finding the differential is done by following the steps below:1) bring down the power of the x term and multiply it by the ter...

Answered by Charlotte Z. • Maths tutor

4163 Views

I do not understand this topic and particularly this example. In the class the result was found out but I still do not get it. How did the teacher came up with this outcome?

Firstly please show me what was the topic and the example in class. Given the topic I will provide the answer and the easiest way to complete it.
For example, let's say the student had to solve the ...

Answered by Madalin F. • Further Mathematics tutor

2572 Views

Peter is 180cm tall, correct to 2 significant figures. Alice is 150cm tall, correct to 2 significant figures. What is the upper and lower bound of the difference in their heights?

Upper bound of Peter's height = 185cmLower bound of Peter's height = 175cmUpper bound of Alice's height = 155cmLower bound of Alice's height = 145cmFor the upper bound of the difference, we want the upper...

Answered by James T. • Maths tutor

3701 Views