7(8+d)=56+7d
That is because you need to multiply every number inside the parentheses with 7
has critical points wherever the partial derivatives vanish:
Then
- If , then ; critical point at (0, 0)
- If , then ; critical point at (1, 1)
- If , then ; critical point at (-1, -1)
has Hessian matrix
with determinant
- At (0, 0), the Hessian determinant is -16, which indicates a saddle point.
- At (1, 1), the determinant is 128, and , which indicates a local minimum.
- At (-1, -1), the determinant is again 128, and , which indicates another local minimum.
The answer is C! Hoped I helped!
Imagine a pie chart with 3 sections, and 2 of those sections take up 25% of the chart each, and the other one takes up 50% of the chart. The 50% section would be marked boys, one of the 25% sections would be marked girls without glasses, and the other 25% section would be marked girls with glasses.