" -11."(x)/(sqrt(x+4)),x>0

lim_(x rarr0)(x)/(sqrt(x+4)-2)

underset(x to 0)"Lt" (x)/(sqrt(4-x)-sqrt(4+x))=

int_(0)^(4)(dx)/(x+sqrt(x))

lim_(x rarr0)(x)/(sqrt(6-x)-4)

Solve for x,6sqrt((x)/(x+4))-2sqrt((x+4)/(x))=11,x!=0,-4

If x=(11)/(4-sqrt(5)), find the value of x^(2)-8x+11

If f(x) = {((1-cos 4x)/x^(2), x lt 0),(a, x =0),((sqrtx)/(sqrt(16+sqrt(x))-4), xgt 0):} then the value of a for which f(x) is continuous at x = 0 is

lim_(x rarr0)(sqrt(x+4)-2)/(x)