Discover Questions

F(x)=[sin(3x)/sin(x)]-[cos(3x)/cos(x)]
a) For what values of x does f(x) not exist?
b) Simplify expression [sin(3x)/sin(x)]-[cos(3x)/cos(x)]? What is the next in the sequence: x/x+1, 1, 2/x+1,? 5/x+4/5=1? A= 8^100 , b=243^40 and c=(0.008)^-50 order the numbers from smallest to biggest? The planes 2x+3y-z=5 and x-y+2z=k intersect in the line 5x+1=9-5y=-5z. Find the value of k.?