Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
If
r
⋅
i
^
=
r
⋅
j
^
=
r
⋅
k
^
\mathbf{r} \cdot \hat{i} = \mathbf{r} \cdot \hat{j} = \mathbf{r} \cdot \hat{k}
r
⋅
i
^
=
r
⋅
j
^
=
r
⋅
k
^
and
∣
r
∣
=
3
|\mathbf{r}| = 3
∣
r
∣
=
3
, then find vector
r
\mathbf{r}
r
.
Browse the problem library