- #1

- 35

- 0

x^4 + 2x^2 + y^4 -2y^2 + 3

i reduced it to

(x^2 + 1)^2 -1 + (y^2 -1)^2 -1 +3

=(x^2 + 1)^2 + (y^2 -1)^2 +1

but the question asks for "the smallest value (for real x and y)"

although judging by the answer to the last question, its the smallest y value.

how do i determin the value?