科学计算器
完整的科学计算器,包括三角、日志、功率、根和常数——免费和在线计算。
关于此计算器
A scientific calculator handles everything a basic calculator does plus trigonometry (sin, cos, tan and their inverses), logarithms, exponents, roots, factorials and the constants π and e. Type a full expression like sin(45)^2 + log(1000) and it respects the correct order of operations. Switch between degrees and radians for trig.
Rather than pressing one operation at a time, you build up a whole expression and it is parsed as a unit: parentheses are resolved first, then exponents and roots, then multiplication and division, and finally addition and subtraction, exactly as the usual PEMDAS/BODMAS rules require. A DEG/RAD toggle controls whether angles are read in degrees or radians, so sin(90) gives 1 in degree mode while sin(π/2) gives 1 in radian mode. Constants π, e and τ, factorials, absolute value and both base-10 and natural logarithms are all available.
For a worked example, entering sin(45)^2 + cos(45)^2 in degree mode returns 1 (the Pythagorean identity), and 5! + sqrt(144) evaluates to 120 + 12 = 132 because the factorial and square root are taken before the addition. Students reach for it in trigonometry, physics and chemistry homework; it also covers everyday needs like powers, percentages and roots without hunting for a physical calculator.
经常问到的问题
我如何使用度而不是弧度?
使用 DEG/ RAD 切换。 在 DEG 模式下, sin( 90) 给 1; 在 RAD 模式下, sin( ) 2 给 1 。 该模式适用于所有三角函数 。
是否按照行动顺序行事?
是的,它对整个表达式进行剖析,并适用标准优先级——括号,然后引号,然后乘数和除法,然后加和减。
支持了哪些功能?
这个科学计算器支持罪、 肤色、 肤色、 辛、 日志、 日志( 基准 10) 、 log2、 sqrt、 cbrt、 exp、 abs、 系数 和常数 、 e 和 # 。
我如何计算出一个指数或根?
Use ^ for powers, so 2^10 is 1024, and sqrt() or cbrt() for square and cube roots. A fractional power also works — 27^(1/3) gives 3 — because the whole expression is parsed with correct precedence.
登录和输入有什么区别?
log 是基准- 10 对数, 所以log( 1000) 是 3, 而 i 是 e 的自然对数, 所以In( e) 是 1 。 也为 基本-2 对数 存在 log2 。
我如何计算一个阶乘?
输入整个数字,然后是元素函数,例如5! 给出 120 (5 × 4 × 3 × 2 × 1) 。 阶乘增长非常快, 大量投入产生非常大的结果 。
我能用"和"来表达吗?
Yes. Type π (pi) and e directly inside an expression, such as 2*π*5 for a circumference or e^2, and they are substituted with their full precision before the expression is evaluated.
成果仅是一般指导的估计数,而不是财务、医疗或税务咨询。