Advertisement
Help Keep Boards Alive. Support us by going ad free today. See here: https://subscriptions.boards.ie/.
https://www.boards.ie/group/1878-subscribers-forum

Private Group for paid up members of Boards.ie. Join the club.
Hi all, please see this major site announcement: https://www.boards.ie/discussion/2058427594/boards-ie-2026

Great Revision Question:Can someone solve this question please ?

  • 20-09-2014 09:30PM
    #1
    Registered Users, Registered Users 2 Posts: 12


    If f(x) = 6sin(x2)+3, where x is measured in radians, then what is the slope of f(x) at x = 3?


Comments

  • Registered Users, Registered Users 2 Posts: 21 Username6212


    Find the derivative of f(x) ( which is the slope) then substitute 3 in for x (this will give you the value when x=3


  • Closed Accounts Posts: 294 ✭✭Raspberry Fileds


    I presume the angle is x-squared (ie x^2). Use Chain Rule to differentiate. First derivative is (2x)(6)cos(x^2). As said, substitute for x.


  • Registered Users, Registered Users 2 Posts: 12 Irishlion97


    correct


Advertisement