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Android scientific calculation with symbolic and graphical tools

Symbolic tensor calculations for field-theory problems

Symbolic transformations for very large expressions

Calculations in algebraic geometry and commutative algebra

Hydraulics and environmental-engineering calculations

Molecular-biology quantities with visible formulas

Calculators for primers, reaction setup and molecular quantities

Solar-system ephemeris calculations with documented time spans

Instrument-specific observing calculations

Depth-of-field and hyperfocal calculations

Cloud-service cost estimates with inspectable assumptions

Room-mode calculations for rectangular and shaped rooms

Generate PDF and Word documents from office-editor templates

Methods and activities for recognizing exclusion in products

Design interviews, books and a learning community

Computational algebra and number-theory software

High-precision numerical expressions with custom functions

Nutrient and water calculations for planted aquariums

Pressure-loss calculations with pipe and fitting data

Arithmetic, finance and practical calculation worksheets

Topic-based calculators for practical questions

Formula calculators with selectable input units

Mathematics and practical calculators by subject

Construction and everyday calculations with searchable tasks