Formula solvers — X

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X-bar Chart Upper Control Limit

\mathit{UCL} = \bar{\bar{x}} + A_2 \bar{R}

Industrial EngineeringUpper control limit of an X-bar chart, built from the average range rather than a computed sigma: grand average plus the tabulated A2 factor times the average range. The lower limit is the same product subtracted.

x-Component from Magnitude and Angle

v_x = |\vec{v}| \cos\theta

Vectors & MatricesTrigonometryPhysicsResolves a vector into its horizontal part from the vector's length and the angle it makes with the positive x-axis.

x-Intercept of a Line

x_{\text{int}} = -\frac{b}{m}

AlgebraGeometryWhere a line in slope-intercept form crosses the x-axis, found by setting y to zero and solving the remaining equation for x.