In a parliament election, a political party hired a public relations firm to promote its candidates in three ways — telephone, house calls and letters. The cost per contact (in paise) is given in matrix A as
he number of contacts of each type made in two cities X and Y is given in the matrix B as
Find the total amount spent by the party in the two cities.
he number of contacts of each type made in two cities X and Y is given in the matrix B as
Find the total amount spent by the party in the two cities.
To promote the making of toilets for women, as organisation tried to generate awareness through (i) house calls (ii) letters and (iii) announcements.
The cost for each mode per attempt is given below :
(i) ₹ 50 (ii) ₹ 20 (iii) ₹ 40
The number of attempts made in three villages X, Y and Z and given below :
If A = , find A² – 5A + 4I and hence find a matrix X such that A² – 5A + 4I + X = 0.
If A = , find A² – 5A + 4I and hence find a matrix X such that A² – 5A + 4I + X = 0.
A problem in mathematics is given to 4 students A, B, C, D. Their chances of solving the problem, respectively, are 1/3, 1/4, 1/5 and 2/3. What is the probability that
(i) the problem will be solved ?
(ii) at most one of them solve the problem ?
Find the equations of the normal to the curve y = x³+ 2x + 6, which are parallel to line x + 14y + 4 = 0.
Find the particular solution of the following differential equation :
y = 0, when x = 2.
Find the equations of the normal to the curve x² = 4y which passes through the point (1, 2).
Find the particular solution of the following differential equation :
y = 0 when x = 0.
Let f : W → W be defined as show that f is invertible. Find the inverse of f,where W is the set of all whole numbers.