Answer:
There is no point of the form (-1, y) on the curve where the tangent is horizontal
Step-by-step explanation:
Notice that when x = - 1. then dy/dx becomes:
dy/dx= (y+2) / (2y+1)
therefore, to request that the tangent is horizontal we ask for the y values that make dy/dx equal to ZERO:
0 = ( y + 2) / (2 y + 1)
And we obtain y = -2 as the answer.
But if we try the point (-1, -2) in the original equation, we find that it DOESN'T belong to the curve because it doesn't satisfy the equation as shown below:
(-1)^2 + (-2)^2 - (-1)*(-2) - 5 = 1 + 4 + 2 - 5 = 2 (instead of zero)
Then, we conclude that there is no horizontal tangent to the curve for x = -1.
Answer:
b option im not sure but
Step-by-step explanation:
X2<span> - 25 = x</span>2<span> - 5</span>2<span> = (x - 5)(x + 5)
</span>
Answer: 67.353
Step-by-step explanation:
60.000
+07.000
+00.300 Writing the numbers like this helps me keep track of them!
+00.050 It lets me see what place each number is in relative to the others
+00.003
67.353
Answer:
1) Gold
2) iron
3) mercury
4) potassium
5) Sodium
6) lead
7) tin
8) antimony
9) Tungsten
10) copper
11) silver
Step-by-step explanation:
