Mister Exam

Derivative of √(1-x²)

Function f() - derivative -N order at the point
v

The graph:

from to

Piecewise:

The solution

You have entered [src]
   ________
  /      2 
\/  1 - x  
x2+1\sqrt{- x^{2} + 1}
  /   ________\
d |  /      2 |
--\\/  1 - x  /
dx             
ddxx2+1\frac{d}{d x} \sqrt{- x^{2} + 1}
Detail solution
  1. Let u=1x2u = 1 - x^{2}.

  2. Apply the power rule: u\sqrt{u} goes to 12u\frac{1}{2 \sqrt{u}}

  3. Then, apply the chain rule. Multiply by ddx(1x2)\frac{d}{d x} \left(1 - x^{2}\right):

    1. Differentiate 1x21 - x^{2} term by term:

      1. The derivative of the constant 11 is zero.

      2. The derivative of a constant times a function is the constant times the derivative of the function.

        1. Apply the power rule: x2x^{2} goes to 2x2 x

        So, the result is: 2x- 2 x

      The result is: 2x- 2 x

    The result of the chain rule is:

    x1x2- \frac{x}{\sqrt{1 - x^{2}}}


The answer is:

x1x2- \frac{x}{\sqrt{1 - x^{2}}}

The graph
02468-8-6-4-2-10105-5
The first derivative [src]
    -x     
-----------
   ________
  /      2 
\/  1 - x  
xx2+1- \frac{x}{\sqrt{- x^{2} + 1}}
The second derivative [src]
 /       2  \ 
 |      x   | 
-|1 + ------| 
 |         2| 
 \    1 - x / 
--------------
    ________  
   /      2   
 \/  1 - x    
x2x2+1+1x2+1- \frac{\frac{x^{2}}{- x^{2} + 1} + 1}{\sqrt{- x^{2} + 1}}
The third derivative [src]
     /       2  \
     |      x   |
-3*x*|1 + ------|
     |         2|
     \    1 - x /
-----------------
           3/2   
   /     2\      
   \1 - x /      
3x(x2x2+1+1)(x2+1)32- \frac{3 x \left(\frac{x^{2}}{- x^{2} + 1} + 1\right)}{\left(- x^{2} + 1\right)^{\frac{3}{2}}}
The graph
Derivative of √(1-x²)