Question 1107491
{{{ f(t) = 6*sin( ( pi/2 )*t ) }}}
Note that if {{{ t=4 }}} sec, then
{{{ (pi/2)*4 = 2pi }}} which is 1 cycle, also,
If {{{ t = 10 }}} sec, then {{{ ( pi/2 )*10 = 5pi }}}
{{{ 4pi }}} would be 2 cycles, so {{{ 5pi }}} is
2 and 1/2 cycles
Here's the plot:
{{{ graph( 400, 400, -1, 10, -7,7, 6*sin( (pi/2)*x )) }}}
The vertical is in inches and
the horizontal is in seconds