The ornamental design for a notebookcomputer, as shown and described.
FIG. 1 is a perspective view of a notebook computer, showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left-side view thereof;
FIG. 5 is a right-side view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is another bottom plan view thereof, in which a portion of the notebook computer is provided with diagonal lines and identified by reference character ‘A’ to illustrate that the corresponding part of the notebook computer, as shown in FIG. 7, is made with rubber; and,
FIG. 9 is a top-front perspective view thereof, in which a display part of the notebook computer rotates on a hinge.
The broken lines are for environmental purposes only and form no part of the claimed design. The shade lines in the figures show contour and not surface ornamentation.