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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:5x3 would b...

GS
Answered by Georgia S. Maths tutor
6213 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 ...

DK
Answered by Danyal K. Maths tutor
3376 Views

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 l...

EB
Answered by Elizabeth B. French tutor
1912 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 ...

EH
Answered by Emma H. Geography tutor
6348 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...

RR
Answered by Ruby R. Maths tutor
3730 Views

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