Question

решите уравнение (cos πx)/(x-2)=1/(x-2)

Answer 1

$frac{cos pi *x}{x-2} = frac{1}{x-2}\ frac{(x-2)cospi*x}{x-2}= frac{x-2}{x-2}\ cos pi *x=1\-1*x=1\x=-1$