If \(\sqrt x - \frac{1}{{\sqrt x }} = \sqrt 5 ,\) then \({x^2} + \fra – McqOptions

MCQOPTIONS

1.	If \(\sqrt x - \frac{1}{{\sqrt x }} = \sqrt 5 ,\) then \({x^2} + \frac{1}{{{x^2}}}\) is equal to∶
A.	47
B.	49
C.	45
D.	51
Answer» B. 49

Discussion

No Comment Found

Related MCQs

The function to evaluate the value of a polynomial,l for a constant value of the independent variable(say a) in the polynomial is ______a) poly(p,a), p is a row vectorb) polyder(p)c) polyint(p)d) polyval(c,
How can the formulation of polynomial be done from its roots?
Name the functions used, for multiplication and division of two polynomials in MATLAB.
MATLAB sees a ________ ordered variable as a vector of dimension n*1.
What happens if we don’t assign a variable to an expression which evaluates a numerical value?
How would you simplify log(x20) – log(x13) – log(x7) in MATLAB? (Assume x is defined as a string variable)
In the function vpa(‘981’,10), why do we put 981 within inverted commas?
What is the nature of the arrangement of the coefficients to store the following expression in MATLAB?
What is the difference between syms ‘x’ and sym ‘x’?
Find the inverse of \(\left( {\begin{array}{*{20}{c}}2&3\\4&5\end{array}} \right)\)