There is no simple analytical formula. One possible way to estimate the square root of a number is by iteration. This entails making a guess at the answer and then improving on it. Repeating the procedure should lead to a better estimate at each stage. One such is the Newton-Raphson method.
If you want to find the square root of 2, define f(x) = x^2 – 2. Then finding the square root of 2 is equivalent to solving f(x) = 0.
Let f’(x) = 2x. This is the derivative of f(x) but you do not need to know that to use the N-R method.
Start with x0 as the first guess. Then let xn+1 = xn - f(xn)/f’(xn) for n = 0, 1, 2, … Provided you made a reasonable choice for the starting point, the iteration will very quickly converge to the true answer. It works even if your first guess is not so good:
Suppose you start with x0 = 1 (a pretty poor choice since 1^2 is 1, not 2).
Even so, x3 = 1.4142156863, which is less than 0.0002% from the true value. Finally, remember that the negative value is also a square root.
There is no analytical formula to enable you to calculate it. One way to estimate the square root of a number is by iteration. This entails making a guess at the answer and then improving on it. Repeating the procedure should lead to a better estimate at each stage. One such is the Newton-Raphson method.
If you want to find the square root of 2, define f(x) = x^2 – 2. Then finding the square root of 2 is equivalent to solving f(x) = 0.
Let f’(x) = 2x. This is the derivative of f(x) but you do not need to know that to use the N-R method.
Start with x0 as the first guess. Then let xn+1 = xn - f(xn)/f’(xn) for n = 0, 1, 2, … Provided you made a reasonable choice for the starting point, the iteration will very quickly converge to the true answer. It works even if your first guess is not so good:
Suppose you start with x0 = 1 (a pretty poor choice since 1^2 is 1, not 2).
Even so, x3 = 1.4142156863, which is less than 0.0002% from the true value. Finally, remember that the negative value is also a square root.
The formula is: Square root of (X2 - X1)2+ (Y2 -Y1)2
4 the way you work this is: 2*(sqrt)2^2 the square root cancels out the exponent, so your left with 2*2
The square root of 20 is an irrational number that can be expressed as 2 times square root of 5
Use the formula for the derivative of a power. The square root of (x-5) is the same as (x-5)1/2.
2 square root 2
The formula is: Square root of (X2 - X1)2+ (Y2 -Y1)2
It is the same as the distance formula. DISTANCE FORMULA: d=square root of (x2-x1)^2+(y2-y1)^2
The square root of the square root of 2
2
AB can be found by using the distance formula, which is the square root of (x2-x1)^2 + (y2-y1)^2. In this case, AB= the square root of (-2-(-8))^2 + (-4-(-4))^2 which AB= the square root of 64 + 0 which AB=8.
4 the way you work this is: 2*(sqrt)2^2 the square root cancels out the exponent, so your left with 2*2
The square root of 20 is an irrational number that can be expressed as 2 times square root of 5
Use the formula for the derivative of a power. The square root of (x-5) is the same as (x-5)1/2.
2 square root 2
Write square root of x as x1/2. Then use the formula for the derivative of a power.
It is the square root of: (x1-x2)2+(y1-y2)2
It is the square root of: (x1-x2)^2+(y1-y2)^2