Replacing featured header image on front page with a responsive image slider

Hello, I would like to replace the full-width header image on my front page with a full-width responsive image slider. I created an image slider using the plugin 'Smart Slider' and it gave me a snippet of code to paste into the template file. However, I'm not sure where to paste it so it will work in place of the header image. Can you help? The code looks like this: <?php echo do_shortcode('[smartslider3 slider=2]'); ?>