Question

lim x趋于π sin{2(X-π)/(X-π)}求极限

Answer 1

你的式子没对哦,该是如下才对

limx->π sin[2(x-π)]/(x-π)

=limx->π 2*sin[2(x-π)]/2(x-π)

=2limx->π sin[2(x-π)]/2(x-π)

=2*1

=2