“Tan-1”的意思、由来-开放百科全书

词条

Tan-1

释义

Tan-1, TAN-1, tan-1, or tan⁻¹ may refer to:

tan⁻¹y = tan⁻¹(y), sometimes interpreted as arctan(y) or arctangent of y, the compositional inverse of the trigonometric function tangent (see below for ambiguity)
tan⁻¹x = tan⁻¹(x), never interpreted as (tan(x))⁻¹ = {{sfrac|1|tan(x)}} = cot(x) or cotangent of x, the multiplicative inverse (or reciprocal) of the trigonometric function tangent (see above for ambiguity)
tan x⁻¹, sometimes interpreted as tan(x⁻¹) = tan({{sfrac|1|x}}), the tangent of the multiplicative inverse (or reciprocal) of x (see below for ambiguity)
tan x⁻¹, sometimes interpreted as (tan(x))⁻¹ = {{sfrac|1|tan(x)}} = cot(x) or cotangent of x, the multiplicative inverse (or reciprocal) of the trigonometric function tangent (see above for ambiguity){{Citation needed|date=November 2017}}

See also