设<img class=jc-formula data-tex=f\left( x \right) src=https://huaweicloudobs.ahjxjy.cn/FB6E53A56CB8DA138AA7D1A4EBCF7519.png style=vertical-align: middle;/>为偶函数,且<img class=jc-formula data-tex=f^{ \prime }\left( 0 \right) src=https://huaweicloudobs.ahjxjy.cn/046BAED46CDFFA350BFE6BD753DE19E3.png style=vertical-align: middle;/>存在,则导数值为( )