HSC Commerce: Marketing and Salesmanship 12th Standard Board Exam - Maharashtra State Board Important Questions for Mathematics and Statistics

If y = x . log x then `dy/dx` = ______.

If y = 2x² + a² + 2² then `dy/dx` = ______.

If y = (log x)² the `dy/dx` = ______.

Price P for demand D is given as P = 183 +120D - 3D² Find D for which the price is increasing

If x = cos2 θ and y = cot θ then find `dy/dx  at  θ=pi/4` 

Find `dy/dx,if e^x+e^y=e^(x-y)`

Using truth table show that ∼ (p → ∼ q) ≡ p ∧ q 

Find the marginal revenue if the average revenue is 45 and elasticity of demand is 5.

A manufacturing company produces x items at the total cost of Rs (180 + 4x). The demand function of this product is P = (240 − x). Find x for which profit is increasing.

Find the elasticity of demand, if the marginal revenue is 50 and price is Rs 75.

The total cost of manufacturing x articles is C = 47x + 300x² − x⁴.  Find x, for which average cost is increasing.

Find MPC ( Marginal propensity to Consume ) and APC ( Average Propensity to Consume ) if the expenditure E_c of a person with income I is given as E_c = ( 0.0003 ) I² + ( 0.075 ) I when I = 1000.

If the demand function is D = 50 - 3p - p², find the elasticity of demand at (a) p = 5 (b) p = 2 ,  Interpret your result. 

Determine the maximum and minimum value of the following function.

f(x) = `x^2 + 16/x`

A metal wire of  36 cm length is bent to form a rectangle. Find its dimensions when its area is maximum.

The total cost of producing x units is ₹ (x² + 60x + 50) and the price is ₹ (180 − x) per unit. For what units is the profit maximum?

The total cost of manufacturing x articles C = 47x + 300x² – x⁴ . Find x, for which average cost is decreasing

If the demand function is D = `((p + 6)/(p − 3))`, find the elasticity of demand at p = 4.

For the demand function D = 100 – `p^2/2`. Find the elasticity of demand at p = 10 and comment on the results.

Choose the correct alternative:

Slope of the normal to the curve 2x² + 3y² = 5 at the point (1, 1) on it is