Missing terms in interpolation table calculator

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Home > Numerical methods > Numerical Interpolation using Forward, Backward, Divided Difference, Lagrange's method calculator

Method and examples

Solution Method

Input data

Missing terms in interpolation table calculator

Type your data in either horizontal or verical format,

Rows :

Click On Generate

x =

Option :

X 2 3 4 5 6
f(x) 45 49.2 54.1 ? 67.4
X 1 2 3 4 5 6 7
f(x) 2 4 8 ? 32 64 128
X 1 2 3 4 5
f(x) 7 ? 13 21 37
X 1961 1962 1963 1964 1965 1966 1967
f(x) 200 220 260 ? 350 ? 430
X 0 1 2 3 4 5
f(x) 0 ? 8 15 ? 35

f(x) =

x₁ = and x₂ =

x =

Option :

`f(x)=2x^3-4x+1`
x1 = 2 and x2 = 4
x = 3.8
Step value (h) = 1
or N = 5
`f(x)=2x^3-4x+1`
x1 = 2 and x2 = 4
x = 2.1
Step value (h) = 1
or N = 8
`f(x)=x^3-x+1`
x1 = 2 and x2 = 4
x = 3.8
Step value (h) = 1
or N = 5
`f(x)=x^3-x+1`
x1 = 2 and x2 = 4
x = 2.1
Step value (h) = 1
or N = 8
`f(x)=x^3+x+2`
x1 = 2 and x2 = 4
x = 3.8
Step value (h) = 1
or N = 5
`f(x)=x^3+x+2`
x1 = 2 and x2 = 4
x = 2.1
Step value (h) = 1
or N = 8
`f(x)=sin(x)`
x1 = 0 and x2 = 1.57
x = 2
Step value (h) = 1
or N = 8
`f(x)=cos(x)`
x1 = 0 and x2 = 1.57
x = 2
Step value (h) = 1
or N = 8

For next step calucation, use previous value

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