Square Root to d Decimal Places

xxxxxxx xxx xxxxxx xxxx xx x xxx-xxxxxxxx xxxxxx xx (x) xxxxxxx xxxxxx, xxxxxxx x xxxxxx xxxx xxxxxxxx.

xxx xxxxxx (x) xxxxxxx xx x xxxxxxx xxxxxx xxxx xx "x" xx "x.xx". xxxxxx (xxxx{x}) xxxxxxxxx (xxxxxxx xxxx) xx xxxxxxx (x) xxxxxx xxxxx xxx xxxxxxx xxxxx, xx x xxxxxx. xxxxxxxxx xxxxx xxx xxxxxx xx xxx xxxxxxx xxxxxx xxxx (x) xxxxxxxx xxxx xx xx xxxx (xxxx{x}): xxx (xxxx{x} = x.xxxxxxxxxx) xxx (x = x) xx xx "x.xxxx", xxx "x.xxxx". xxxx (x = x) xxx xxxxxx xx xx xxxxxxx xxxx xx xxxxxxx xxxxx.

xxxxxxxxx xxxx_xxxxxxxxx(x, x). xx xxx xxxx xxxx, xxxxx, xxx, xx xxxxx xx xxx xxxxx xxx xxxx: xxxxxxxx xxx xxxxxx xxxx xxxxxxxx xx xxx xxxxx xx xxx xxxxxxxx. xxx xxxxxx xxxx xx xxxxx, xx x xxxxxxxx-xxxxx xxxxxxxx xx xxx xxxxxx xx xxx xxx.

xxxxxxxx

xxxx_xxxxxxxxx("x", x)
# "x.xxxx"  (xxx xxxxxx xxxx xx x.xxxxxx...)

xxxx_xxxxxxxxx("x.xx", x)
# "x.xx"

xxxx_xxxxxxxxx("xx.xx", x)
# "x.x"  (xxxxxxx x.x, xxxxx x xxxxxx xxxxxxxx xx x.xxxxx...)

xxxx_xxxxxxxxx("xx", x)
# "x"

xxxxxxxxxxx

• (x) xx x xxxxxx xx xxxxxx, xxxxxxxxxx xxxxxxxx xx x xxxxxxx xxxxx xxx x xx xx xxxx xxxxxx. xx xxx xx xxxx, xx xxxxxxxx xxx xx xxxxxxx xxxxx xxxxxx x xxxxxx x xxxxxx xxx xxxxx ("x.x", xxxxx ".x" xx "xx.x").
• (x xx x xx x), xxx (x xxxx xx^{xx} < xx^{xx}). xx (xxxx{x} xxxx xx^{x} < xx^x).
• xxx xxxxxxx xxxx xx xxx xxxxxx xxx xx xxxxxxx xxxxx: "x.xx", "xx.x".
• xxx xxxxxxx xxxxxx xxxx xxxx xxxxxxxxx xx xxxxxx xxxxx xx xxxxxx xxxx xxx xxxxx xxxxx. xxxxxxxx xx xxxx x xxx xxxx xx (xx^{-x}) xx x xxxx xxxx xxx xxxxxx xx xxxx.

xx x++

xxx::xxxxxx xxxx_xxxxxxxxx(xxxxx xxx::xxxxxx& x, xxx x);