Survey

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Survey

Document related concepts

Elementary arithmetic wikipedia , lookup

Location arithmetic wikipedia , lookup

Approximations of π wikipedia , lookup

Real number wikipedia , lookup

Positional notation wikipedia , lookup

Line (geometry) wikipedia , lookup

Mathematics of radio engineering wikipedia , lookup

Transcript

MATHEMATIC CENTER D96 MUNIRKA VILLAGE NEW DELHI 110067 www.badhaneducation.in or www.mathematic.in 9810144315 Chapter – 5 1. Find real values of x and y for which the complex numbers (- 3 + ix2y) and( x2 + y +4i) are complex conjugate of each other. 2. If z1 and z2 are complex numbers such that Ans: 3 3. Show that a real value of x will satisfy the 4. 5. equation: Find the square root of 7 – 24i. Express sin 300 + i cos 300 in polar form Chapter - 6 6. An electrician can be paid under two schemes as given below: Scheme I : Rs. 500 and Rs. 70 per hour scheme II : Rs. 120 per hour. If the work takes x hours to complete, for what value of x does the scheme I give the electrician better wages? 7. Solve the inequality 8. Solve the inequality 9. The cost and revenue functions of a product are given by C(x) = 2x + 400 and R(x) = 6x + 20 respectively, where “x” is the number of items produced by the manufacturer. How many items atleast the manufacturer must sell to realize a profit. Email [email protected] 9810144315 MATHEMATIC CENTER D96 MUNIRKA VILLAGE NEW DELHI 110067 www.badhaneducation.in or www.mathematic.in 9810144315 Ans : 95 10. Exhibit the solution of linear inequation graphically: Chapter – 7 11. How many different numbers of 6 – digits can be formed by using the digits 1, 2, 1, 2, 0, 2? Ans : 50 12. Find the number of (i) Combinations (ii) Permutations of 4 letters taken from the word EXAMINATION. Ans: (i) 136 (ii) 2454 13. There are 15 points in a plane, no 3 of them are in a straight line except 4 which are collinear. Find the number of (i) straight lines (ii) triangle formed by joining them. Ans : (i) 100 (ii) 451 14. Find the number of rectangles in the adjoining figure: Ans:60 15. There 6 questions in a question paper. In how many ways can a student solve one or more questions: Ans: 63 Email [email protected] 9810144315