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(i) Find the coordinates of the stationary point on the curve y = 3x^2 − 6/x − 2. [5] (ii) Determine whether the stationary point is a maximum point or a minimum point.

i) dy/dx = 0dy/dx = 6x + 6/x^2 6x + 6/x^2 = 06x^3 + 6 = 0x^3 + 1 = 0x^3 = -1x = -1y = 7(-1, 7)ii) d^2y/dx^2 = 6 - 12/x^3 x = -1 6-12/(-1)^3 = 18>0 therefore, minimum point
DY
Answered by Dila Y. • Maths tutor
9236 Views

What is the subjunctive tense?

Firstly, the subjunctive is not a tense, it is actually a mood. The subjunctive is known as a mood because it is used to express the sense that the speaker employs an attitude or feelings towards a fact or i...
SG
Answered by Schaunagh G. • French tutor
2429 Views

Cuando hay que usar 'ser' y cuando 'estar'? / When do I have to use 'ser' and 'estar'?

Ser and Estar are similar verbs but they each have specific situations where they are used. In general, we use Ser when we are identifying ourselves or others as well as our nationality e.g. Soy Cristina, so...
CC
Answered by Cristina C. • Spanish tutor
2584 Views

How do I write a good personal statement?

Preparation and planning is key when writing a good personal statement. Given the tight character limit, it is important to have a strict plan and stick to it, so that you don't have to spend too much time c...
NG
3202 Views

Find the Binomial Expansion of (1-5x)^4.

First I would set up how i was taught using Pascals Triange. As this is to the power of 4 the numbers across will be 1 4 6 4 1.Then I would multiply each number by the correct power of either (-5x) or (1). A...
MV
7103 Views