Recent content by 10min

  1. 1

    How do I find the inverse of a function with a given input?

    Homework Statement Find (f^-1) (a) if f(x) = sqrt of (x^3+x^2+x+2) and a = 4? Homework Equations Find (f ^-1) (a) = 1/ f ^1( f ^-1(a)) The Attempt at a Solution Take Derivative 1/2(x^3+x^2+x+2)^-(1/2) do I need to do chain rule? I am lost this problem can help me pass the...
  2. 1

    Find an equation of the tangent line

    Homework Statement Find an Equation of the tangent line to the curve y=10^x at the point (1,10) Homework Equations Derivative y=mx+b The Attempt at a Solution I am totally lost I don't know what to do with 10^x Please help me this will save me failing the class
  3. 1

    Derivatives of Log: Find f'(x) for f(x) = log10(x/x-1)

    so many answer is not right
  4. 1

    Derivatives of Log: Find f'(x) for f(x) = log10(x/x-1)

    Homework Statement Question is f(x) = log10(x/x-1), find f `(x) Homework Equations so I used the formula d/dx loga(u) = 1/uLNa . (d/dx U) The Attempt at a Solution (1/(x/x-1)*ln10)*1/(x-1)^2 I used quotent rule for d/dx U part. editing Final Answer I got is...
  5. 1

    How to Find the Derivative of a Trigonometric Function?

    Homework Statement if f(x) = SQRT[X]TAN[X] + 2X / SIN[X]+COS[X] Find f`(pi/4) Homework Equations doon't know The Attempt at a Solution
  6. 1

    Derivative of a Polynomial Function?

    just checking
  7. 1

    Derivative of a Polynomial Function?

    Homework Statement Find derivative of function? if f(x) = (x^2 + 3x -2 ) (x^3-4) Find f`(x) Homework Equations FOIL or Multiply both The Attempt at a Solution I get 5x^4 + 12x^3 - 6x^2 -8x-12 is this right?