Level:
Project ID:
2010006003
Source Problem:
Accepted:
0
Clonable:
1
Easy:
0
Find the set of values of the parameter \( c\in\mathbb{R} \) for which the line \( 5x-3y-c=0 \) isn't a secant of the ellipse \( 25x^2+16y^2=400 \).
\( (-\infty,-25 ] \cup [ 25,\infty) \)
\( (-25,25) \)
\( \{-25,25\} \)
\( (-\infty,-25) \cup (25,\infty) \)
\( [ 25,\infty) \)