The curve y=x2 is restricted to x 0. Find its intersection with y=x+2. A student says that a single

Question

The curve y=x2 is restricted to x 0. Find its intersection with y=x+2. A student says that a single intersection means the line is tangent. Explain why this conclusion is false.

Accepted Answer

$(2,4)$; not tangent because the retained root is simple, with the other root excluded by the domain.

One intersection without tangency

One intersection without tangency

Solution:

Solution locked