9514 1404 393
Answer:
dy/dx = y/(2x)
Step-by-step explanation:
The product formula can be used, along with the power rule.
d(uv) = du·v +u·dv
__
d(y^2/x) = d(18)
2y·dy/x -y^2/x^2·dx = 0
2x·dy -y·dx = 0 . . . . . . . . multiply by x^2/y
dy/dx = y/(2x) . . . . . . . . add y·dx, divide by 2x·dx
Answer:
9. 70° 10. 90° 11. 110°
Step-by-step explanation:
12. 25°
13. 95°
14. 20°
Answer:
-2 < x
Step-by-step explanation:
-1 < 3 + 2x
bring the 3 to the other side and minus it
-1 < 2x
-3
______
-4< 2x
now divide 2 by both sides
the two eliminates itself
so it equals
-2< x
