Lucy is knitting a blanket and needs to buy some more yarn. at her local craft store, 2 skeins of yarn cost $7 and 8 skeins of y
1 answer:
You might be interested in
Answer:
The value of x at this instant is 3.
Step-by-step explanation:
Let , we get an additional equation by implicit differentiation:
(1)
From the first equation we find that:
(2)
By applying (2) in (1), we get the resulting expression:
(3)
If we know that and
, then the first derivative of x in time is:
From (1) we determine the value of x at this instant:
The value of x at this instant is 3.