I don't speak Romanian, but the closest translation for this suggests you're trying to compute

Integrate by parts:

where
u = ln(x)²   ⇒   du = 2 ln(x)/x dx
dv = x³ dx   ⇒   v = 1/4 x⁴

Integrate by parts again:

where
u' = ln(x)   ⇒   du' = dx/x
dv' = x³ dx   ⇒   v' = 1/4 x⁴

So, we have





 
        
             
        
        
        
Answer: $4850
Step-by-step explanation:
The other information related to the question is:
Direct materials = $3.50
Direct labor = $1.10
Variable overhead = $0.45
Fixed overhead = $2.80
Total = $7.85
Based on the information given in the question, the increase in the profit will be calculated as the contribution from the 3000 extra units minus the worker's salary.
Contribution from 3000 units will be:
= (Selling price - Direct materials - Direct labor - Variable overhead) × 3000
= ($25 - $3.50 - $1.10 - $0.45) × 3000
= $19.95 × 3000
= $59850
Increase on Profit:
= $59850 - $55000
= $4850
 
        
             
        
        
        
Answer:
25 sqrt(x y^3)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
15
Step-by-step explanation:

Cross multiply to get 25x = 375
Divide each side by 25 to get x = 15