Find the values of x where x+3>2/(x-4), what about x+3>2/mod(x-4)?

a) Create an inequality in x: (x+3)(x-4)<2. Expand and find the critical points, x^2-x-14>0. Find the answers to this inequality using quadratic formula and then test for a value between your two critical points x0=(1+sqrt(57))/2 and x1=(1-sqrt(57))/2. Also as x-4=0 at x=4 we need to consider the asympotote at x=4. As 0 in the original equation satisfies the inequality, use x=0 as a test as it is between the two cvs we can conclude that to satisfy the inequality, x1<x4. b)if for x+3>2mod(x-4) the equation is the same for x>4. For x<4 then we need to compare with (x+3)>-2/(x-4), Therefore expand to get x^2 -x-10<0. The roots of this equation are x=(1+-sqrt(41))/2. Then compare with x=0 again and find that x>4, (1+sqrt(41))/2>x>(1-sqrt(41))/2

BH
Answered by Benjamin H. Further Mathematics tutor

2820 Views

See similar Further Mathematics A Level tutors

Related Further Mathematics A Level answers

All answers ▸

A block of mass 50kg resting on a rough surface with a coefficient of friction equal to 1/3. Find the maximum angle at which the surface can be inclined to the horizontal without the block slipping. Give your answer to 3 significant figures


Prove by mathematical induction that, for all non-negative integers n, 11^(2n) + 25^n + 22 is divisible by 24


Can you show me how to solve first order differential equations using the integrating factor method?


What modules have you done before?


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