在数学公式中,符号“∝”表示什么关系?
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Correct answer
A. 正比关系
Principle or equation
符号“∝”读作“正比于”,表示两个量之间存在正比例关系。
Why this answer is correct
在数学和科学中,若y与x成正比,则记作y∝x,即y=kx(k为常数)。
Example
在物理学中,弹簧的伸长量ΔL与所受拉力F成正比,可表示为ΔL∝F。
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