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Given y=x^3-x^2+6x-1, use diffferentiation to find the gradient of the normal at (1,5).

dy/dx = 3x^2-2x+6 At (1,5), dy/dx = 7. 7 is the gradient of the tangent, therefore the gradient of the normal at (1,5) is -1/7.
KR
2871 Views

What is the present subjunctive and when is it used?

The subjunctive is a ' mood ', not to be confused with ' tense ' since a mood can have more than one tense. The present form of the subjunctive is the most common in French today; there is also an imperfect ...
TJ
Answered by Tabitha J. • French tutor
5062 Views

How can you tell the difference between a right-handed and left-handed coil (or helix) by looking at it?

Portions of proteins can arrange in regularly repeating structures such as α-helices: the vast majority of these helices are right-handed (the left-handed versions are very rare). Similarly, DNA (double) hel...
RS
Answered by Riccardo S. • Science tutor
28357 Views

What is the sliding filament mechanism?

The sliding filament mechanism is a model used to show the way in which muscles contract. It involved 3 components - Myosin, Actin and Tropomyosin. Myosin has a head like projection to which an ADP molecule ...
JC
Answered by Joseph C. • Biology tutor
12801 Views

How do you find the length of the longest side of a right-angled triangle?

First of all, I would ask the student what they think the question means and whether they have encountered a question like this before, so that I know where to start from. If the student is more of a visual ...
ET
Answered by Eddie T. • Maths tutor
4801 Views