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How can I analyse a quote?

Analysing a quote can be done in a number of ways and is often a key part of essay writing. My school taught me to use the PEEL approach but there are many other variants of this which you may have learnt in...
SA
6623 Views

Find the tangent to y = x^2 - 4x + 9 at the point (3,15)

First find dy/dx: dy/dx = 4x - 4 And thus at (3,15): dy/dx = 12 - 4 = 8 = m (as m is the gradient of a curve) So using y - y 1 = m(x - x 1 ) where (x 1 ,y 1 ) = (3,15): y - 15 = 8(x - 3) y = 8x- 9
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Answered by Scott H. • Maths tutor
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What would happen to n and Emax when  a) the intensity is reduced to 1/2 I but the wavelength λ is unchanged? b) the wavelength λ is reduced but the intensity is unchanged?

FULL QUESTION: Electromagnetic radiation of wavelength λ and intensity I, incident on a metal surface, causes n electrons to be emitted per unit time. The maximum kinetic energy of the electrons is Emax. Wha...
KE
Answered by Kim E. • Physics tutor
8340 Views

Why might a private limited company want to expand to become a public limited company? What are the advantages and drawbacks to doing so?

There are various reasons why a private company might want to become a public limited company, but the most common reason is to raise money in the public market by issuing shares. Investors who are eligible ...
MC
34639 Views

Find the derivative (dy/dx) of the curve equation x^2 -y^2 +y = 1.

Most of the differentiation problems require us to apply one of the well known rules, be it product rule, quotient rule or chain rule. But those problems have one thing in common: explicite formula for y, be...
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Answered by Adam G. • Maths tutor
6302 Views