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2. Download Wolfram Notebook. The number two (2) is the second positive integer and the first prime number. It is even , and is the only even prime (the primes other than 2 are called the odd primes ). The number 2 is also equal to its factorial since . A quantity taken to the power 2 is said to be squared.
Arithmetic. (−2)2. Share. Examples. Quadratic equation. x2 − 4x − 5 = 0. Trigonometry. 4sinθ cosθ = 2sinθ. Linear equation. y = 3x + 4. Arithmetic. 699 ∗533. Matrix. [ 2 5 3 4][ 2 −1 0 1 3 5] Simultaneous equation. {8x + 2y = 46 7x + 3y = 47. Differentiation. dxd (x − 5)(3x2 − 2) Integration. ∫ 01 xe−x2dx. Limits. x→−3lim x2 + 2x − 3x2 − 9.
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