Explain why the function is differentiable at the given point. f(x, y) = 4 + x ln(xy − 9), (5, 2) the partial derivatives are fx(x, y) = correct: your answer is correct. and fy(x, y) = correct: your answer is correct. , so fx(5, 2) = 10 correct: your answer is correct. and fy(5, 2) = 25 correct: your answer is correct. both fx and fy are continuous functions for xy > incorrect: your answer is incorrect. and f is differentiable at (5, 2). find the linearization l(x, y) of f(x, y) at (5, 2). l(x, y) =

answer: the anser is 3

step-by-step explanation:

c- 2o is equal to 9

answer: 1722

step-by-step explanation:

given: the mass of saturn=

the mass of mercury=

the number of times the mass of saturn is greater than the mass of mercury

hence, the mass of saturn is 1722 times greater than the mass of mercury.

step-by-step explanation:

let's assume

number of candles set =x

price of of x candles =p(x)

we are given

a candle maker prices one set of scented candles at $10 and sells an average of 200 sets each week

so, we get point as (200,10)

he finds that when he reduces the price by $1, he then sells 50 more candle sets each week

so, we can find slope

now, we can use point slope form of line

now, we can plug values

we can use point

and find b

now, we can plug it back

and we get

now, we can find revenue

we know that

revenue = price*quantity

so, we get