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The number of real roots of the equation...

The number of real roots of the equation `x^(2)-3|x|+2=0` is

A

4

B

3

C

2

D

1

Text Solution

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The correct Answer is:
A
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OBJECTIVE RD SHARMA ENGLISH-QUADRATIC EXPRESSIONS AND EQUATIONS -Exercise
  1. If alpha, beta are roots of the equation ax^2 + bx + c = 0 then the...

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  2. The number of roots of the equation, x-2/(x-1)=1-2/(x-1) is 0 (b) 1 ...

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  3. The number of real roots of the equation x^(2)-3|x|+2=0 is

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  4. If the equation a/(x-a)+b/(x-b)=1has two roots equal in magnitude and ...

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  5. If one of the roots of the equation ax^2 + bx + c = 0 be reciprocal ...

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  6. If sin alpha and cos alpha are roots of the equation px^2 + qx+r=0 th...

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  7. If x-c is a factor of order m of the polynomial f(x) of degree n (1 < ...

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  8. If x-c is a factor of order m of the polynomial f(x) of degree n (1 < ...

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  9. If a and b are two distinct real roots of the polynomial f(x) such th...

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  10. If ax^3+ bx - c is divisible by x^2+bx+c, then 'a' is a root of the ...

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  11. If alpha,beta are the roots of x^2+p x+q=0a n dx^(2n)+p^n x^n+q^n=0a n...

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  12. Root (s) of the equation 9x ^(2) -18|x|+5=0 belonging to the domain of...

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  13. If x=1+i is a root of the equation =x^3-i x+1-i=0, then the other real...

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  14. Let a, b, c be real numbers, a != 0. If alpha is a zero of a^2 x^2+bx...

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  15. If alphaa n dbeta are the roots of x^2+p x+q=0a n dalpha^4,beta^4 are ...

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  16. The equation (cosp-1)^x^2+(cos p)x+s in p=0 in the variable x has real...

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  17. The number of real solution of the equation. sin(e^(x))=5^(x)+5^(-x) ...

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  18. Suppose that f(x) is a quadratic expresson positive for all real xdot ...

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  19. If c ,d are the roots of the equation (x-a)(x-b)-k=0 , prove that a, b...

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  20. Show that A.M. of the roots of x^(2) - 2ax + b^(2) = 0 is equal to ...

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