9th Social Science Preboard Exam Real Paper with Solution | Class 9 Preboard 2022 | GAURAV CROOKS

11th class English model paper solution

Model test paper class 9

How many cars did the 9th grade class wash during the car wash?

Determine the number of real solutions there are for 9x^2-12x+18=0

Let t be a ral number satifying 2t ^(2) -9t ^(2) + 30 -lamda =0 where t =x + 1/xand lamda in R. If the above cubic has three real and sisinct solutions foe x then exhaustive set of value of lamda be :

The number of real solutions of the equation (9//10)^x=-3+x-x^2 is

Based on the graph in the previous example, which of the following statements must be true I. f(5)+f(-5)=0 . (II. 9f -5 lt x lt 5 , the maximum value of function f is 4. III. The quation f(x)=3 has 3 real solution.

If the system of linear equations x_1+2x_2+3x_3=6,\ x_1+3x_2+5x_3=9,\ 2x_2+5x_2+a x_3=b is consistent and has infinite number of solutions, then- a in R-{8}a n d\ b in R-{15} a=8,\ b can be any real number a=8,\ b=15 b=15 ,\ a can be any real number

consider the system of equations : ltbr. 3x-y +4z=3 x+2y-3z =-2 6x+5y+lambdaz =-3 Prove that system of equation has at least one solution for all real values of lambda .also prove that infinite solutions of the system of equations satisfy (7x-4)/(-5)=(7y+9)/(13)=z

The number of real or complex solutions of x^(2)-6|x|+8=0 is (a) 6 (b) 7 (c) 8 (d) 9