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Math B Question?
"Given the function y= f(x), such tht the entire graph of the function lies above the x-axis. Explain why the equation f(x) = 0 has no real solutions."
HUH?
3 Answers
- JJLv 41 decade agoFavorite Answer
itz b coz the graph is a line parallel to y axis..
if it had ny slope it wud have met x axis at some point...
n since it does not have ny slope dat means slope =0
n eqn for slope is y=mx+c...here x is prptnl to y/m.. ie y/0
which is infinity...
y is f(x) so f(x)=0 has no real solutions....
jj
- anotherhumanmaleLv 51 decade ago
Since f(x) is above the x-axis, it can only have values greater than 0, because above the x-axis y is greater than 0. Otherwords: f(x)>0 for all x. Therefore f(x) = 0 cannot be true for any real value of x.
- AnswerLv 51 decade ago
If f(x) or y equaled zero, you'd have a point on the x-axis.
No coordinate can have zero as their y-value.
