Ramu also writes the distance formula as
` AB = sqrt((x_(1)-x_(2))^(2)+(y_(1)-y_(2))^(2))*` why ?

y=sqrt(1+x^(2)) and y'=(xy)/(1+x^(2))

Prove that the line passing through the points (x_(1),y_(1)) and (x_(2),y_(2)) is at a distance of |(x_(1)y_(2)-x_(2)y_(1))/(sqrt((x_(2)-x_(1))^(2)+(y_(2)-y_(1))^(2)))| from origin.

Prove that the line passing through the points (x_(1),y_(1)) and (x_(2),y_(2)) is at a distance of |(x_(1)y_(2)-x_(2)y_(1))/(sqrt((x_(2)-x_(1))^(2)+(y_(2)-y_(1))^(2)))| from origin.

y = sqrt(1 + x^(2)) : y' = (xy)/(1 + x^(2))

y = sqrt(1 + x^(2)) : y' = (xy)/(1 + x^(2))

y = sqrt(1 + x^(2)) : y' = (xy)/(1 + x^(2))

Ramu says the distance of a point P(x.y) from the origin O(0,0) is sqrt(x^(2)+y^(2)) . Do you agree with Ramu or not ? Why ? (AS_(2),AS_(3))

If y = log (x + sqrt(x ^(2) + 1)) then y _(2)(1) =

The distance between the points A(x_(1),y_(1),z_(1)) and B(x_(2),y_(2),z_(2)) is AB=