EX.—Find ∛(0·0002.)

To make even multiples of 3 figures requires the addition of 00; we have

then 200, the cube root of which is found to be about 5·85. Then, since

the first divisional group consists of 0s, one 0 will follow the decimal

point, giving ∛(0·0002) = 0·0585 [0·05848].

_Cube Root (Inverted Slide Method)._—Another method of extracting the

cube root involves the use of the inverted slide. Several methods are

used, but the following is to be preferred:—_Set the_ L.H. _or_ R.H.

_index of the slide to the number on A, and the number on ᗺ (i.e., B

inverted), which coincides with the same number on D, is the required

root._

Setting the slide as directed, and using first the L.H. index of the

slide and then the R.H. index, it is always possible to find _three_

pairs of coincident values. To determine which of the three is the

required result is best shown by an example.

The slide rule · 第 52 / 138 题