Answers>Maths>IB>Article

Given the function f(x)=λx^3 + 9, for λ other than zero, find the inflection point of the graph in terms of λ. How does the slope of the line tangent to the inflection point changes as λ varies from 0 to 1?

f'(x) = 3λx^2f''(x) = 6λxFor the inflection point (x0,y0), it is true that f''(x0)=0 so 6λxo=0 => x0= 0 (since λ cannot be zero)Therefore, the infelction point is (0,f(0)) => (0,9)The second part of the question is a trick question since any line tangent to th einfelction point of a graph is parallel with the x'x axis.

Answered by Claire D. Maths tutor

2149 Views

See similar Maths IB tutors

Related Maths IB answers

All answers ▸

Why is there a "+C" term in the solution of every indefinite integral?


In an arithmetic sequence, the first term is 2, and the fourth term is 14. a) Find the common difference, d. b) Calculate the sum of the first 14 terms, S14.


What is integration by parts, and how is it useful?


Find a and b (both real) when (a+b*i)^2=i.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences