Question

如图第四题求解，详细过程，求大神谢谢！

Answer 1

追答

if you feel satisfied，please take my answer as the best one 哦~

追问

thank you

Where the "R"comes from?

Please tell me thx

追答

assume that the radius of the solid sphere is R,then the formula of the sphere in Cartesian coordinates is x²+y²+z²=R²

oh,i think i was wrong。。

追问

……what？

追答

R is the distance between the point(0，0，0) and the point (x，y，z)

追问

that is interesting!

thx!
M

追答

R=|λ|

goodnight

追问

ok thank u

You are really a good teacher😉

gnight

how can i make your answer the best?

追答

采纳呗~