I have been a personal tutor in Maths and Physics for over 20 years. I have a Physics degree for the University of Exeter, and know my subject inside out.
The function f is defined for all real numbers by f(x)=sin(2x+ π/4) Find the general solution of the equation f(x)=0.
I seriously need help with this!!!
Hey guys :) I'm kinda stuck on this question.. so i have to sketch the graph: y=(x2-4)/(x2+4x+6) so I know you have to find the vertical asymptote which doesn't exist by the way and the horizontal asymptote is y=0. the x-intercept=2, y-intercept=-2/3. Ok, now I need to draw the graph now but i don't really know how.
The line L passes through the points P ( -1,2) and Q (11,8). A) Find an equation for L in the form y= mx+c, where m and c are constants. ( I'm fine with this part of the question) B) The line Z passes through the point R (10,0) and is perpendicular to L. The lines L and Z intersect at the point S. Calculate the coordinates of S ( to find the coordinates of S you equate the first equation L to the equation of the second line Z and then find the values of x and y I think? Please correct me if I'm wrong) C) Show that the length of RS is 3 square root 5 (Use formula of finding the length of a straight line)
D) Hence, or otherwise, find the exact area of triangle PQR This is the part I'm struggling with, please answer if you can Thanks