7 multiply by (1 divide by (6 multiply by x)) multiply by co sinus of e of (7 multiply by x) minus sinus of (7 multiply by x) divide by (6 multiply by x squared ) equally 0
seven multiply by (one divide by (six multiply by x)) multiply by co sinus of e of (seven multiply by x) minus sinus of (seven multiply by x) divide by (six multiply by x to the power of two) equally zero
7*(1/(6*x))*cos(7*x) - sin(7*x)/(6*x2) = 0
7*1/6*x*cos7*x - sin7*x/6*x2 = 0
7*(1/(6*x))*cos(7*x) - sin(7*x)/(6*x²) = 0
7*(1/(6*x))*cos(7*x) - sin(7*x)/(6*x to the power of 2) = 0
7(1/(6x))cos(7x) - sin(7x)/(6x^2) = 0
7(1/(6x))cos(7x) - sin(7x)/(6x2) = 0
71/6xcos7x - sin7x/6x2 = 0
71/6xcos7x - sin7x/6x^2 = 0
7*(1 divide by (6*x))*cos(7*x) - sin(7*x) divide by (6*x^2) = 0