Create an implementation using 2-input NAND gates only for the following equation. You may use inverter symbols internally and/or inversion symbols ( ) on the inputs as has been done in the example...

Extracted text: Create an implementation using 2-input NAND gates only for the following equation. You may use inverter symbols internally and/or inversion symbols ( ) on the inputs as has been done in the example with the understanding that these would be replaced with 2-input NAND gates with inputs tied together. Be sure to minimize your SOP equations before conversion the NAND-only. f(a, b, c, d) = c'd + c(b' + d)