Графический калькулятор Casio fx-CG50. Идеален для сдачи международных экзаменов: IB, SAT, A-level. Очень эргономичный и функциональный. Поддерживает все типы графиков, Объёмные фигуры, статистику, таблицы.
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Описание с сайта производителя (Casio):

Graphing

• 3D Graph (pre-installed software)
• Rectangular coordinate graphing, Polar coordinate graphing
• Integration graph
• Parametric function graphing, Inequality graphing
• Trace, Zoom (box zoom, zoom in, zoom out, auto zoom)
• Table and Graph
• Dual Graph (table and graph, graph and graph)
• Sketch (tangent line, normal line, inverse function)
• Solve (root, minimum, maximum, intersection, integration: integral calculation improvement (real-time integral calculation), new integral calculation function (mixed integrals))
• Dynamic graph
• Conic section graph
• Recursion graph
• Picture Plot (pre-installed software)
Statistics

• List-based one-variable and two-variable statistical analysis
• Statistical regression calculations
• Statistical plot (scatter plot, xyLine, normal probability plot, histogram, box plot)
• Statistical regression graphs (linear, med-med, quadratic, cubic, quartic, logarithmic, exponential, power, sinusoidal, logistic regression)
• Advanced statistical calculations: tests (Z-test, t-test, χ²-test, F-test, ANOVA), intervals (Z-interval, t-interval), distributions
• Pie chart
• Bar graph
Hardware

• Power supply: Four AAA-size alkaline batteries or four nickel-metal hydride batteries
• Approximate battery life (hours): 140 (AAA-size alkaline batteries), 85 (nickel-metal hydride batteries) Assuming 5 minutes calculation and 55 minutes display per hour
• Dot matrix display: 216 x 384 dots
• Display capacity (characters): 21 x 8
• Internal operation digits: 15
• Nested parentheses levels: 26
• Data communication: 3-pin cable, USB cable
• 3-pin serial port
• USB port