| cmd_linetan | Function (ROM Call 0x35A)

AMS 1.01 or higher | bascmd.h

void cmd_linetan (CESI expr, CESI x);

Executes TI-Basic 'LineTan' command.

cmd_linetan displays the Graph Screen and draws a tangent line to the expression pointed to by expr (the expression is assumed to be a function which uses x as the independent variable) at the point specified by the floating point item pointed to by x.

Uses: ER_catch, ER_success, ER_throwVar, NG_approxESI, push_expression, push_Float, push_quantum, push_quantum_pair, top_estack, gr_active, OSCheckBreak, is_transfinite, ForceFloat, GraphActivate, GrLineFlt, QSkipGraphErr, XCvtPtoF, YCvtPtoF

See also: cmd_slpline, cmd_line, cmd_drawfunc