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Vectors a and b are defined by a = 2i + 3j and b = 4i - 2j, find 3a-b in terms of i and j

3a = 6i + 9j

-b = -4i + 2j

3a-b = (6i-4i) + (9j+2j) = 2i + 11j 

PM
Answered by Pearse M. Maths tutor
6999 Views

Find ∫(4x - 2/(x^3)) dx

Using the integer rule 1/ (xn) = x-n question becomes ∫(4x - 2(x-3)) dx

Then using the formula ∫xn dx = (xn+1)/n+1 and assuming there may be a...

PM
Answered by Pearse M. Maths tutor
3981 Views

How should I structure my essay?

As much as you may not want to hear this, there is no absolute, correct way to structure an essay. The essay structure that you use really depends on the question that you are being asked. However, there ...

SM
Answered by Stephanie M. History tutor
2217 Views

Explain how a bright line is formed by the diffraction grating at the first order diffraction angle

A diffraction grating is basically a series of very small, point-like light sources, where the adjacent ones are always a given distance away. To have a bright line, the light waves from all of the point-...

AB
Answered by Abel B. Physics tutor
18590 Views

How to write an algebraic fraction in a given form e.g. (3+13x-6x^2)/(2x-3) as Ax + B + C/(2x-3) where A, B and C are natural numbers

I would break this down into simple steps:

Step 1 - Equate the 2 expressions: (3 + 13x - 6x2) / (2x - 3) = Ax + B + C / (2x - 3)

Step 2 - Multiply both sides by the demoninator: 3...

AT
Answered by Alex T. Maths tutor
3275 Views

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