We're looking for a scalar function
such that its gradient is equal to the given vector-valued function
:
That is, we require
Integrating the first equation with respect to
gives
Differentiating with respect to
gives
but from this step we can see that it's not possible for
to be a function of
and
, independent of
. So there is no such function
.
One variable is the amount of days. Lets call the amount of days D. Another variable is the amount of pictures left. Lets call this p. In this case, since Emanuel is deleting 20 pictures a day, and he has 745 picture to start with, the equation would be 745- 20D=p.
12k-1 is the simplified answer
Answer:
114 degrees
Step-by-step explanation:
6x+12=3x+63
-3x -12 -3x -12
3x=51
x=17
6(17) +12 = 114