Help please с математикой ребята

1)y=f(x0)+f'(x0)*(x-x0) f(x0)=f(3)=3^2-3*3+5=5 f'(x0)=2x-3 f'(x0)=2*3-3=3 y=5+3(x-3)=5+3x-9=3x-4 y=3x-4 2)y=x^2-7x+10     x0=4 f(x0)=f(4)=4^2-7*4+10=22 f^(x0)=2x-7=f(4)=2*4-7=1 y=22+1(x-4)=x+18 y=x+18 5)f^(x)=0.5x^2+x-1.5=x+1 f(2)=x+1=2+1=3 k=3 6) f^(x)=lnx+x^2=1/x+2x  f(1/2)=1:1/2+2*1/2=3 k=3