а) f'(x) = (3x^2 + 1)cos(x^3 + x - п/4)f'(0) = (30^2 + 1)cos(0^3 + 0 - п/4) = 1cos(-п/4) = 1*(-√2/2) = -√2/2
б) f'(x) = 2xsec^2(x^2 + п/6)f'(0) = 20sec^2(0^2 + п/6) = 0*sec^2(п/6) = 0
а) f'(x) = (3x^2 + 1)cos(x^3 + x - п/4)
f'(0) = (30^2 + 1)cos(0^3 + 0 - п/4) = 1cos(-п/4) = 1*(-√2/2) = -√2/2
б) f'(x) = 2xsec^2(x^2 + п/6)
f'(0) = 20sec^2(0^2 + п/6) = 0*sec^2(п/6) = 0