SOLVER is a powerful engineering calculator that simultaneously solves systems of nonlinear equations. 

Enter your equations naturally (one per line) and get every unknown solved at once. Built for engineers, scientists, and students who need more than a standard calculator.

• UNIT AWARE: Annotate any value with engineering units like [N], [m], [psi], or [deg] and SOLVER tracks dimensions automatically. Mixed-unit expressions are converted on the fly, trig functions handle degrees and radians seamlessly, and results display in your preferred units.

• VECTORS & MATRICIES: Work with 2D and 3D vectors using Cartesian or polar notation. Compute dot products, cross products, magnitudes, components, and equilibrium checks. Define matrices inline and perform multiplication, inversion, transpose, determinant, and eigenvalue calculations.

• PARAMETRICS (ALPHA): Sweep any variable across a range and capture how every other unknown responds. Plot the results as XY curves with multi-axis support, zoom, pan, crosshair readout, and labeled annotations.

• OPTIMIZATION: Minimize, maximize, or target a specific value for any variable. 

• FORMATTING: View your equations beautifully rendered with proper math formatting, including fractions, subscripts, Greek letters, and matrix/vector notation. Export as LaTeX, HTML reports, or images.

• ADVANCED FUNCTIONS: Including complex numbers, piecewise functions, numeric integration and differentiation, conditional expressions, user-defined functions, hyperbolic trig, and more ... over 80 built-in functions.

Built-In Problem Library Get started immediately with dozens of worked sample problems spanning solid mechanics, fluid mechanics, thermodynamics, electrical engineering, and physics.