Find the differential coefficient of:
`x^(6)+6x^(4)-4x^(2)`

Find the differential coefficient of: x^(x)

Find the differential coefficient of: x^(2x)

Find the differential coefficient of: x^(5x)

Find the differential coefficient of: x^(5)+4x

Find the differential coefficient of: x^(3)-9x-6

Find the differential coefficient of: x^(9)-5x^(2)+3x

Find the differential coefficient of: (x^(4)-1)(x^4+1)

Find the differential coefficient of: (x^(6)-1)/(x^(2)-1)

Find the differential coefficient of: (x^(4)-1)/(x^(2)+1)

Find by the definition the differential coefficient of the following: if 8f(x)+6f(1/x)=x+5 and y=x^2f(x) find [dy/dx]_x=1