Advertisements
Advertisements
Question
Instantaneous rate of change of y = 2x2 + 5x with respect to x at x = 2 is:
Options
4
5
13
9
Advertisements
Solution
13
APPEARS IN
RELATED QUESTIONS
A firm produces x tonnes of output at a total cost of C(x) = `1/10x^3 - 4x^2 - 20x + 7` find the
- average cost
- average variable cost
- average fixed cost
- marginal cost and
- marginal average cost.
Revenue function ‘R’ and cost function ‘C’ are R = 14x – x2 and C = x(x2 – 2). Find the
- average cost
- marginal cost
- average revenue and
- marginal revenue.
Find the elasticity of demand in terms of x for the following demand laws and also find the value of x where elasticity is equal to unity.
p = (a – bx)2
The supply function of certain goods is given by x = a`sqrt("p" - "b")` where p is unit price, a and b are constants with p > b. Find elasticity of supply at p = 2b.
Find the values of x, when the marginal function of y = x3 + 10x2 – 48x + 8 is twice the x.
The total cost function for the production of x units of an item is given by C = 10 - 4x3 + 3x4 find the
- average cost function
- marginal cost function
- marginal average cost function.
Find the elasticity of supply when the supply function is given by x = 2p2 + 5 at p = 1.
For the demand function p x = 100 - 6x2, find the marginal revenue and also show that MR = p`[1 - 1/eta_"d"]`
Average cost is minimum when:
A company begins to earn profit at:
