For the following problem, write a single MATLAB statement that will accomplish the stated purpose. Assume a character array TS$1$ has already been defined.

Place the numeric index of the first alphabetic character in TS$1$ into Alpha$1.$ Example: TS$1=\text{'}\%$@$3$Gb$6\text{'}$ returns Alpha$1=4$

Note: For this part, assume TS$1$ is already defined and exists in the Workspace.