Is the function f:R>[0,co) defined byf(x)=x2 an Injection or a surject

1.	Is the function f:R>[0,co) defined byf(x)=x2 an Injection or a surjection or abijection. Justify your answer.
Answer» Step-by-step explanation: 3. For what value of k, the pair of linear equations 3x+y=3 and 6x+ky=8 does not have a solution. 1 4. If 3 chairs and 1 table costs RS. 1500 and 6 chairs and 1 table costs Rs.2400. Form linear equations to represent this situation. 1 5. Which term of the A.P. 27, 24, 21,…..is zero? OR In an Arithmetic Progression, if d= - 4, n=7,an=4, then find a. 1 6. For what values of k, the equation 9x2+6kx+4=0 has equal ROOTS? 7. Find the roots of the equation x2+7x+10=0 OR For what value(s) of ‘a’ quadratic equation 30 2 − 6 + 1 = 0 has no real roots? 1 8. If PQ=28cm, then find the perimeter of ∆PLM 1 9. If two tangents are inclined at 60˚ are DRAWN to a circle of radius 3cm then find length of each tangent. OR PQ is a tangent to a circle with centre O at point P. If ∆OPQ is an isosceles triangle, then find ∠OQP.

Is the function f:R>[0,co) defined byf(x)=x2 an Injection or a surjection or abijection. Justify your answer.

Answer»

Step-by-step explanation:

3. For what value of k, the pair of linear equations 3x+y=3 and 6x+ky=8 does

not have a solution.

4. If 3 chairs and 1 table costs RS. 1500 and 6 chairs and 1 table costs Rs.2400. Form

linear equations to represent this situation.

5. Which term of the A.P. 27, 24, 21,…..is zero?

In an Arithmetic Progression, if d= - 4, n=7,an=4, then find a.

6. For what values of k, the equation 9x2+6kx+4=0 has equal ROOTS?

7. Find the roots of the equation x2+7x+10=0

For what value(s) of ‘a’ quadratic equation 30

2 − 6 + 1 = 0 has no real

roots?

8. If PQ=28cm, then find the perimeter of ∆PLM 1

9. If two tangents are inclined at 60˚ are DRAWN to a circle of radius 3cm then

find length of each tangent.

PQ is a tangent to a circle with centre O at point P. If ∆OPQ is an isosceles

triangle, then find ∠OQP.