Recent content by screamtrumpet

thanks!

so would k=3?

Homework Statement if (1, -1) lies on the graph of the equation kx^2-xy+y^2 =5 what is the value of k? Homework Equations The Attempt at a Solution plugging in 1 and -1 for the respective x y values yielded 3.How would you go abut solving this?

it looks like it intercepts injb 3 places

so do you plug in c?

Homework Statement The graph of f(x)=1.1x^4-6.7x^2+7.9x-2 satisfies the equation f(c)=0 for how many real values of c? Homework Equations The Attempt at a Solution 1.1(0*^4)-.7(0)^2+7.9(o)-2 1 real value of c?

Homework Statement (1/sqr root(1+s)-1)/(s) Homework Equations The Attempt at a Solution I first subtracted the numerator and got 1 on top 1/sqr root (1+5)

Thanks!

Homework Statement lim t^2-9/t-3 x>3 Homework Equations The Attempt at a Solution I factored it into (t-3)(t+3)/(t-3) i then canceled out the (t-3)'s and substituted 3 to get 6 is this correct?

after factoring and simplifying i got my answer to be 2b

so would that be square root x plus square root b?

Homework Statement lim x>b (b-x)/sqr rootx-sqr root b The Attempt at a Solution I multilplied the top and bottom by b+x and found b-x^s on the top and x-b on the bottom

thanks

Homework Statement Find the x values if any for which x is not continuous.Which of the dicontinuities are removable?Homework Equationsf(x)=1/(x^2+1)The Attempt at a SolutionIts unfactorable at the bottom ,i tried to factor it.Would this mean there are no discontinuities?

Thank you