Blood Type Compatibility. Your ABO blood type is based on the presence or absence of the A and B antigens on your red blood cells. The A blood type has only the A antigen and the B blood type has only the B antigen. The AB blood type has both A and B antigens, and the O blood type has neither A nor B antigen.
Green Triangle. The green triangle appears in the upper left hand corner of a cell when there is an error in a formula. Sometimes Excel will report an error when you use text in a box and the program believes it is part of a formula. When you click on the green triangle there will be a yellow box that looks like a road sign with an exclamation point in it. This button is the Trace Error option that will help you correct your formula.
Instructions. Press the Y= button located in the top-left corner of your calculator keypad. Type in your function into the Y1 line and graph the function by pressing the Graph button located on the top-right corner of your calculator keypad.Activate the Calculate menu by pressing the blue 2nd button on your calculator and then pushing the Trace button, which is located left of the Graph button.croll down to the seventh option in the Calculate menu. Press the Enter button to select the option. Set your cursor to find the range of where you want to find the area under the normal curved graph.