Search our library of homework questions

Top answers

All subjects

All levels

Differentiate y=3x^2+2x+4 and find the stationary points, decide if it is a local maximum or minimum.

First Differentiate the equation to getdy/dx=6x+2Equal this to 0 to find the stationary pointdy/dx=0=6x+2 => 6x=-2=> x=-2/6=> x=-1/3
differentiate again to find the whether it is a maximum o...

Answered by Jemma G. • Maths tutor

4475 Views

(The question is too long so it's marked at the top of the answer space, sorry for any inconveniences)

Question:Particle P of mass m and particle Q of mass km are moving in opposite directions on a smooth horizontal plane when they collide directly. Immediately before the collision the spe...

Answered by Xudong W. • Maths tutor

4487 Views

Explain why a simple electric motor continues to turn in the same direction when there is a current in the coil (6 marks)

This question would be illustrated with the correct diagram to enhance understanding. The question is for 6 marks, so 6 key points need to be made. When the current is switched on, a magnetic field is gen...

Answered by Luke J. • Physics tutor

19166 Views

Integrate (3x^2 - (1/4)x^-2 + 3) dx

3x²-(1/4)x^-2+3
Split the problem into three separate terms and integrate independently.With any term where x is to the power of something, divide the coefficient by the value of...

Answered by Lucy L. • Maths tutor

4592 Views