Найдите производную функции:

1) y=-6/x+x в 7 степени 2) y=sinx+2√x 3) (5x-8) (3x+5)

1) y=-6/x+x^7

y' = - 6/1+6x^6 = - 1+x^6

2) y = sinx+2√x

y' = cosx+2*1/2√x = cosx+1/√x

3) (5x-8) (3x+5)

по формуле:

(U*V) ' = U'V+UV'

получаем:

(5x-8) (3x+5) = 5 * (3 х+5) + (5 х-8) * 3 = 15 х+25+15 х-24 = 30 х+1