Top answers

All subjects
IB

What are the different registers used in French language?

Register refers to the way oneself might express themselves in different situations and towards different people. French language distinguishes four kinds of register which are: formal register (for writt...

LG
Answered by Laura G. French tutor
4922 Views

Solve the equation sec^2 x+ 2tan x = 0, 0 ≤ x ≤ 2π. IB May 2017 Exam

sec^2 x+ 2tan x = 0
use the fact that sec^2 x= tan^2 x +1
tan^2 x + 2tan x + 1 =0
(tan x +1)^2 = 0 tan x = - 1
x=3π/4, x= 7π/4

MP
Answered by Michal P. Maths tutor
2579 Views

An electron is trapped within a square well potential of width 10 nm. What would be the wavelength of the photon emitted when an electron moves from the first energy level to the ground level.

Use energy difference between ground and first level to find E1-E0. Energy of the electron a nth energy level is found using En = (n^2pi^2hbar^2)/2mL^2Where n is the energy level plus 1, pi and h...

AG
Answered by Aubin G. Physics tutor
1602 Views

What is a geometric sequence?

A sequence is defined as a function with domain the set of the natural numbers, and codomain the set of the real numbers. A geometric sequence (a_n) is a sequence of the form: a_n = a_(n-1)*r, where r is ...

GK
Answered by Georgios K. Maths tutor
1486 Views

The function f has a local extreme at point (1,4). If f''(x)=3x^2+2x, then find f(0)?

A local extreme point would mean that f'(1)=0. Since integration is the inverse application of derivation, to obtain f'(x) function we integrate the f''(x) function. Bearing in mind the integration rule o...

MT
Answered by Moris T. Maths tutor
1335 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