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A curve has equation y = 20x - x^2 - 2x^3 . The curve has a stationary point at the point M where x = −2. Find the x- coordinate of the other stationary point of the curve

A stationary point on a curve is when the differential of the equation of the curve = 0. In other words when dy/dx = 0Take the equation in the question: y = 20x - x² - 2x³A simple ru...

Answered by Henry J. • Maths tutor

3517 Views

Let a = 4b + 5(c - b). Find the value of c when a = 8 and b = 7.

a = 4b + 5(c - b) - question8 = (4*7) + 5(c - 7) - insert values given in question8 = 28 + 5c -35 - multiply and expand brackets8 - 28 + 35 = 5c - take away 28 from the left and right-hand side of the equ...

Answered by George H. • Maths tutor

3675 Views

Do we have a moral obligation to protect the weak globally?

If faced with this at interview, the first thing to do is BREATHE! You aren't going to come up with a well thought through answer if you panic and blurt out the first thing that comes into your head. The ...

Answered by Priya E. • Oxbridge Preparation tutor

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Explain how an acceleration-displacement graph could be used to determine the frequency of oscillation of a metal plate.

Acceleration (A)= Angular Velocity² (w²)Displacement (x)Angular Displacement= 2piFrequency (f)Gradient= A/x = w² = [2pi*f]²Rearrange the equation to g...

Answered by Tise O. • Physics tutor

8279 Views

Find the equation of the line through the following points: (-2, -3) and (1, 5)

Note the formula: y - y₁ = m(x - x₁)x, y, x_1,y₁ refer to the values of your given coordinates. 'm' symbolises the gradient of the line you are asked to findRe...

Answered by Tise O. • Maths tutor

2945 Views