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Give the possible values of x when 2x^2-x-6=0

first of all the equation needs to be written in the form (ax+b)(x+c) 

because 2 can only be made by multiplying 2 and 1 we know that a=2 so (2x+b)(x+c)

-6 can be made by multiplying 2 and -...

NS
Answered by Nina S. Maths tutor
4137 Views

P is directly proportional to Q. When Q = 6, P = 15. Work out the value of P when Q = 3.5

If P is directly proportional to Q then that means if Q increases P will also increase. If Q decreases P will also decrease. Two values that are directly proportional to each other are related to each oth...

ZT
Answered by Zsolt T. Maths tutor
40875 Views

Examine the sequence 1 + 1/3 + (1/3)^2 + … + (1/3)^n Under what condition does it converge? What does it converge to?

This is a sequence in the form 1 + c + c2 + … cn

1 + c + c2 + … cn  * (1 - c) = 1 – cn+1

So we can rewrite the sequence as

1 – c...

HY
Answered by Hanaan Y. Maths tutor
2938 Views

Consider a differential equation where dx/dt = -axt. Find an equation for x(t).

Starting from dx/dt = -axt.                                We treat dx and dt as infinitessimal factors of x and t, therefore fundemental mathematical operations still apply. Rearranging the equation to g...

CL
Answered by Cal L. Maths tutor
4558 Views

How do you expand brackets? eg. (2x+3)(3x+4)

Use the FOIL method for: (2x+3)(3x+4)

First                      e.g. multiply first two numbers (2x and 3x)

Outside                e.g. 2x and 4

NC
Answered by Naba C. Maths tutor
5267 Views

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