TI-83 Plus Applications 455
GPrn(, GInt(
GPrn( computes the sum of the principal during a specified period for an
amortization schedule using stored values for æ, PV, and PMT. pmt1 is the
starting payment. pmt2 is the ending payment in the range. pmt1 and pmt2
must be positive integers < 10,000. roundvalue specifies the internal
precision the calculator uses to calculate the principal; if you do not specify
roundvalue, the TI-83 Plus uses the current Float/Fix decimal-mode setting.
Note: You must enter values for æ, PV, PMT, and before computing the
principal.
GPrn(pmt1,pmt2[,roundvalue])
GInt( computes the sum of the interest during a specified period for an
amortization schedule using stored values for æ, PV, and PMT. pmt1 is the
starting payment. pmt2 is the ending payment in the range. pmt1 and pmt2
must be positive integers < 10,000. roundvalue specifies the internal
precision the calculator uses to calculate the interest; if you do not
specify roundvalue, the TI-83 Plus uses the current Float/Fix decimal-mode
setting.
GInt(pmt1,pmt2[,roundvalue])