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What's the best way to answer a question with a source?

Highlight links and annotate precisely so you don't forget how it specifically links to your point.In answer write the link in quote marks and in sentence use phrases like 'as the item says...' to sign po...

MH
Answered by Molly H. Sociology tutor
2124 Views

Using de Moivre's theorem demonstrate that "sin6x+sin2x(16(sinx)^4-16(sinx)^2+3)"

Consider, (cosX+isinX)6 using binomial expansion we find that this = "cos6X + 6icos5XsinX - 15cos4Xsin2X - 20icos3Xsin3X +...

5037 Views

Prove that 27(23^n)+17(10^2n)+22n is divisible by 11 for n belongs to the natural numbers

Proofs come in many shapes and sizes but this one is done via induction. When doing proof by induction, examiners love a list of a clear definite list of steps, the first being the base case, in t...

3026 Views

Differentiate y=x^2+4x+12

y=x^2+4x+12dy/dx=2x+4

RH
Answered by Robert H. Maths tutor
3405 Views

Calculate (7-i*sqrt(6))*(13+i*sqrt(6))

We expand the parentheses to get to the equation: 713-13isqrt(6)+7isqrt(6)-iisqrt(36) which after some further calculations equals to: 91-6isqrt(6)+sqrt(36) [We got...

Answered by Maths tutor
3245 Views

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