Top answers

All subjects
A Level

Write cosx - 3sinx in the form Rcos(x + a)

Rcos(x + a) = Rcosxcosa - Rsinxsina
By comparing cosx - 3sinx to the new expression, we can see that:
Rsina = 3 and Rcosa = 1
If we square both and add them, we can see R = √(12

OG
Answered by Odin G. Maths tutor
9735 Views

What is Ionisation Energy and the three factors that affect it? 2)State and explain the general trend in first ionisation energies for the Period 3 elements.

  1. Ionisation energy is the energy required to remove 1 mole of electrons from each atom in 1 mole of gaseous atoms to form 1 mole of gaseous ions.For...
KR
15032 Views

How do I explain what effect an increase in government spending may have on unemployment and inflation in an economy?

The best way to answer this question would be by using the help of a Keyenesian diagram. After drawing the standard long-run supply curve and aggregate demand curves we can show what effect an increase in...

AR
Answered by Abid R. Economics tutor
2465 Views

How to integrate ln(x)?

You need to use a clever trick for this! Write ln(x) as 1ln(x), and use integration by parts:u=ln(x) v'=1u'=1/x v=xThen applying the formula we obtain∫ln(x)dx = xln(x) - ∫[(1/x)x] dx = ...

KW
2957 Views

A) Differentiate ln(x) b) integrate ln(x)

A) y=ln(x) Ey = x Ey(dy/dx ) = 1 Eln(x)(dy/dx) = 1 X(dy/dx) = 1 Dy/dx = 1/xb) y = 1 * ln(x) V = ln(x) U= x dv/dx =1/x Du/dx = 1xln(x) - (integral) x * (1/x)xln(x) - (integ...

SR
Answered by Stanley R. Maths tutor
3369 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning