An elecA little girl kicks a …

An elecA little girl kicks a soccer ball. It goes 10 feet and comes back to her. How is it possible A 10 foot rope ladder hangs over the side of a boat with the bottom rung on the surface of the water. The rungs are one foot apart, and the tide goes up at the rate of 6 inches per hour. How long will it be until three rungs are covered? A is the father of B. But B is not the son of A. How’s that possible? A man dressed in all black is walking down a country lane. Suddenly, a large black car without any lights on comes round the corner and screeches to a halt. How did the car know he was there? A rooster laid an egg on top of the barn roof. Which way did it roll? A truck driver is going down a one way street the wrong way, and passes at least ten cops. Why is he not caught? An electric train is moving north at 100mph and a wind is blowing to the west at 10mph. Which way does the smoke blow?

Y=sin√ax^2+√bx+√c

Find all vectors of magnitude 10√3 that are perpendicular to the plane of i+2j+k and -i+3j+4k

function f is defined as f(x) = {2x+2, x<2; k, x=2; 3x, x>2} find the value of k for which the function f is continuous at x=2

What is the maximum value of sinx + cos x

Project on to minimise the cost of the food, meeting the dietary requirements of the staple food of the adolescent students of your school. Task to be done 1. Make a survey of atleast 100 people to find the staple food they consume on daily basis. 2. Select two food items constituting one cereal and one pulse. 3. Find from dietician minimum requirement of protein and carbohydrates for an andolescent and also find the content of protein and carbohydrates in 1 Kg of selected cereal and pulse from the market. 4. Find the minimum cost of the selected cereal and pulse from market. 5. formulate the corresponding linear programming problem. 6. solve the problem graphically. 7. Interpret the result.

Y= 1/2 [tan¯¹(2x/1-x²) + 2tan¯¹(1/x)

Find the second order derivatives of the functions x²+3x+2

Prove that tan–¹ (x+1) + tan–¹(x-1) = tan–¹ 8/31

What is the maximum value of the function sin x + cosx

Three friends Ravi Raju