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y = 2/x^3 find and expression for dy/dx

y = 2 x -3 simpler to differentiate in this form dy/dx = (-3)(2 x -4 ) multiply by power out the front and subtract one from the powerdy/dx = -6/x 4 simplified version of above equation
RB
Answered by Rufus B. • Maths tutor
3417 Views

Describe how the structures involved in a reflex action help co-ordinate a reflex: (image with receptor, effector, spinal cord, synapse and neurones)

A receptor detects a stimulus e.g. pressure. The receptor generates electrical signals. Neurones conduct impulses, a sensory neurone conducts to the spinal cord. There is a synapse between the neurones and t...
PA
Answered by Pareya A. • Biology tutor
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What is the process of gas exchange in the alveoli?

So as we know, the job of the lungs is to transfer oxygen from the outside atmosphere into the body while also removing waste products that the body has produced and needs to get rid of- carbon dioxide. The ...
MA
Answered by Mohammad A. • Biology tutor
6185 Views

When do you use the passé composé or the imparfait and how do you form these two tenses?

The passé composé is used to describe a completed action in the past.To form the passé composé you will need the subject, the auxiliary and the past participle of the verb:e.g. J’ai joué (I played) – Je = th...
Answered by • French tutor
1989 Views

Find the co-ordinates of the turning point of the line with equation y = x^2 + ax + b that passes through (1, 47) and (2, 60)

y = x 2 + ax + bWhen x=1:47 = (1) 2 + a(1) + b47 = 1 + a + b46 = a + bWhen x = 260 = (2) 2 + a(2) + b60 = 4 + 2a + b56 = 2a + b Let this be equation 1Let 46 = a + b be equation 2Subtract equation 2 from equa...
HM
Answered by Henry M. • Maths tutor
3180 Views