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Find the x co-ordinates of the stationary points of the graph with equation y = cos(x)7e^(x). Give your answer in the form x = a +/- bn where a/b are numbers to be found, and n is the set of integers.

The stationary points on a curve of the form y=f(x) are where dy/dx = 0. To find dy/dx, differentiate using the product rule: dy/dx = 7e^x(d/dx(cosx)) + cosx(d/dx(7e^x)) = -sinx(7e^x) + cosx(7e^x). Now se...

JS
Answered by Joseph S. Maths tutor
7341 Views

Explain how a public good is different to a private good.

A public good has two characteristics that separate it from being a private good; non-rivalry and non-excludability. Non-rivalry means that your consumption of that good does not reduce the amount that an...

GP
Answered by Gwyn P. Economics tutor
2496 Views

The line AB has equation 5x + 3y + 3 = 0. The line AB is parallel to the line with the equation y = mx + c. Find the value of m.

I like to separate problems into small steps that are easy to follow. In this example these would be: STEP 1: make y the subject (meaning only y on the Left hand side - LHS); 3y = -5x - 3. STEP 2: divide ...

HS
Answered by Harrison S. Maths tutor
3351 Views

Explain two types conformity.

Conformity, or majority influence, is a form of social influence whereby a person or groups behaviour/attitudes are changed to fall in line with the social norms or values of the majority, even when there...

HA
Answered by Holly A. Psychology tutor
4567 Views

Outline and evaluate the Working Memory Model.

Baddeley and Hitch's Working Memory Model contains four systems: the central executive, which controls attention and higher executive functions; the visuo-spatial scratch pad, which stores spatial and vis...

HA
Answered by Holly A. Psychology tutor
6042 Views

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