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Show that Sec2A - Tan2A = (CosA-SinA)/(CosA+SinA)

Sec2A - Tan2A Definition of Sec and Tan = 1/Cos2A - Sin2A/Cos2A Combining Fractions = (1 - Sin2A) / (Cos2A) Apply Double Angle Formula = (1 - 2SinACosA) / (Cos 2 A - Sin 2 A) Make use of 1 = Cos 2 x + Sin 2 ...
JC
Answered by James C. • Maths tutor
37892 Views

using an integrating factor, find the general solution of the differential equation dy/dx +y(tanx)=tan^3(x)sec(x)

This is a first order differential equation, but initially it is not solvable as both the X&Y's can't be separated from eachother directly. An integrating factor is a specific value that when multiplied ...
TR
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solve the quadratic equation: x^2-4x+3=0

This equation is asking us to find the value(s) of x that when substituted in place of x in the equation x 2 -4x+3 the computed value should equal 0. There three potential methods of solving this equation, t...
TR
Answered by Taylor R. • Maths tutor
10083 Views

What are the main differences between prokaryotic and eukaryotic cells?

I would say the main difference here is that eukaryotic cells (e.g. animal cells) have a nucleus and membrane-bound organelles, whereas prokaryotic cells (bacteria and archaea) have no nucleus and no membran...
SP
Answered by Sophie P. • Biology tutor
15582 Views

What are 'shareholder ratios' and how do you work them out?

Shareholder ratios are measures used to assess the level of return received by the shareholders of a company. There are two main meaures: dividend per share and divident yield. Dividend per share = a ratio t...
FD
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