Чётность/нечетность:
f(x)=6tg4x-3x^7
f(x)=(9x-10)//(5x+2) - (9x+10)//(5x-2)

f(x)=6tg4x-3x^7f(-x)=-6tg4x+3x^7=-(6tg4x-3x^7)f(x)=-f(-x) нечетная f(x)=(9x-10)//(5x+2) - (9x+10)//(5x-2) f(-x)=(-9x-10)/(-5x+2)-(-9x+10)/(-5x-2)=[-(9x+10)]/[-(5x-2)]-[-(9x-10)]/[-(5x+2)]==(9x+10)/(5x-2)-(9x-10)/(5x+2)=-[(9x-10)//(5x+2) - (9x+10)//(5x-2) ]f(x)=-f(-x) нечетная