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Solve the following equation : x^2 + 2x +1 = 0

x 2 + 2x +1=0x 2 + x + x + 1 = 0x(x+1) + 1(x+1) = 0 ... factorise out to leave cmmon factorsfactorise out the common brackets...(x+1)(x+1) = 0 If two things multiplied together craete 0, one of the numbers h...
BA
Answered by Brandon A. • Maths tutor
4387 Views

A particle P of mass 0.4 kg is moving under the action of a constant force F newtons. Initially the velocity of P is (6i – 27j) m s−1 and 4 s later the velocity of P is (−14i + 21j) m s−1 . Find, in terms of i and j, the acceleration of P.

On the whiteboard I would provide a brief drawing of the particle, and of all the information provided (force applied to P and its before and after velocity) as a visual aid for the student. I would ask/remi...
FW
Answered by Finn W. • Maths tutor
7658 Views

Factorise 3x + 6

Hcf=3 3(x+2)
RA
Answered by Rumsha A. • Maths tutor
11895 Views

Solve 2^(3x-1) = 3

2 3x - 1 = 3log 2 (2 3x-1 ) = log 2 (3)3x - 1 = log 2 (3)3x = 1 + log 2 (3)x = 1 / 3 + 1 / 3 log 2 (3)
JB
Answered by Jacob B. • Maths tutor
5755 Views

Express cos2x in the form a*cos^2(x) + b and hence show that the integral of cos^2(x) between 0 and pi/2 is equal to pi/a.

Apply the double angle formula to cos2x to yield the requested result. cos2x = 2cos^2(x) - 1 Spot that the question asks us to prove the value of cos^2(x) when integrated, and that we can move the variables ...
LP
Answered by Louis P. • Maths tutor
5910 Views