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Find dy/dx for y=5x^3−2x^2+7x−15

'Find dy/dx' means it wants us to differentiate. The rules for this are multiply the coefficient (number before x) by the current power, then decrease the power by 1.In this example:5x 3 would become 15x 2 ,...
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Answered by Georgia S. • Maths tutor
6995 Views

y= arcos(x). Find dy/dx in terms of x.

Rearrange the expression to create a familiar function with a known differencial: arcos(x)=y x= cos(y) Differenciate x with respect to y: dx/dy= -sin(y) We know that dy/dx= 1/(dx/dy), so rearange to find an ...
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Answered by Danyal K. • Maths tutor
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Usage of the Imperfect Tense and the Passé Composé.

A question which blights both GCSE and A Level students and becomes particularly relevant when doing translation work. The imperfect tense refers to actions that took place over a long period in the past, an...
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Answered by Elizabeth B. • French tutor
2523 Views

What are the different processes of erosion that take place in a river?

There are four main different processes of erosion in a river: abrasion, attrition, hydraulic action and solution.Abrasion is when large particles (stones and rocks) being transported in the river's load are...
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Answered by Emma H. • Geography tutor
7973 Views

Solve the simultaneous equations. 2x + y = 18, x−y=6

In this question, we are going to find the values of x and y from the equations above. To start off, we will number the equations:(1): 2x+y=18(2): x-y=6now we will add (1) to (2) as that will get ride of the...
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Answered by Ruby R. • Maths tutor
4392 Views