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Find an equation of the straight line that is perpendicular to the straight line x + 3y = 7 and that passes through the point (4,9).

y = 3x - 3
VP
Answered by Vikesh P. • Maths tutor
3766 Views

Solve x^3=1 giving all the roots between -pi<=theta<=pi in exponential form

x^3=1=e^2(pi) i k x=e^2(pi) i k/3 The three roots are k=0 x=1 k=1 x=e^2(pi)*i/3 k=-1 x=e^-2(pi) i k/3
AA
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How do I answer paper 1?

Paper 1 is an unseen commentary paper. It can seem tricky at first but once you get the hang of it you can do very well on this paper! I think its helpful to have a formula of how to answer these questions (...
EP
Answered by Esther P. • English tutor
10779 Views

solve: x^2= 4(x-3)^2

x^2= 4(x^2 - 6x + 9) x^2= 4x^2- 24x + 36 3x^2 - 24x + 36= 0 (x-2)(x-6)=0 x= 2 or x=6
GK
Answered by Ghazn K. • Maths tutor
3693 Views

How do I approach the analysis of Elgar's first symphony?

Approaching an analysis of a large work such as a symphony can seem daunting at first, but the task can be made easy and enjoyable by setting out what features of the music to look for (such as harmony/ melo...
SG
Answered by Sydney G. • Music tutor
5621 Views