Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
If
x
2
+
y
2
=
1
x^2 + y^2 = 1
x
2
+
y
2
=
1
, then a.
y
y
′
′
−
2
(
y
′
)
2
+
1
=
0
yy'' - 2(y')^2 + 1 = 0
y
y
′′
−
2
(
y
′
)
2
+
1
=
0
b.
y
y
′
′
+
(
y
′
)
2
+
1
=
0
yy'' + (y')^2 + 1 = 0
y
y
′′
+
(
y
′
)
2
+
1
=
0
c.
y
y
′
′
+
(
y
′
)
2
−
1
=
0
yy'' + (y')^2 - 1 = 0
y
y
′′
+
(
y
′
)
2
−
1
=
0
d.
y
y
′
′
+
2
(
y
′
)
2
+
1
=
0
yy'' + 2(y')^2 + 1 = 0
y
y
′′
+
2
(
y
′
)
2
+
1
=
0
Browse the problem library