" 9."quad x^(2)+x+(1)/(sqrt(2))=0

x^(2)-(sqrt(2)+1)x+sqrt(2)=0

(d)/(dx)[cos^(-1)(x sqrt(x)-sqrt((1-x)(1-x^(2))))]=(1)/(sqrt(1-x^(2)))-(1)/(2sqrt(x-x^(2)))(-1)/(sqrt(1-x^(2)))-(1)/(2sqrt(x-x^(2)))(1)/(sqrt(1-x^(2)))+(1)/(2sqrt(x-x^(2)))(1)/(sqrt(1-x^(2)))0 b.1/4c.-1/4d none of these

lim_(xrarr0) (sqrt(x^(2)+1)-1)/(sqrt(x^(2)+9)-3)?

If f9x),={(cos^(2)x-sin^(2)x-1)/(sqrt(x^(2)+1)-1)x,!=0,x=0, is continuous at x=0, find k

(x-sqrt(2))^(2)-sqrt(2)(x+1)=0

(1) x^(2)-(sqrt(2)+1)x+sqrt(2)=0

int(2x+9)/(sqrt(x^(2)+x+1))dx